Petojen tie. Maaliin on enää runsaat 50 kilometriä, mutta ruokaa ei ole ja leijonat, gepardit ja hyeenat väijyvät vaeltajia viimeisten kilometrien ajan.

Hajoamispiste. Ruoan puute alkaa näkyä selvästi 19 päivän ja 196 kilometrin jälkeen diabeetikko Robinissa, ja sen myötä koko lauma on vaarassa hajota.

Kuoleman laakso. Suuri vaellus on jatkunut 14 päivää, ja kuusi ovat jättäneet leikin kesken. Salametsästäjät ja Orangi-joen vahva virtaus tuovat uusia vaaroja.

Suuri vaellus

Suuri vaellus

Suuri vaellus

Suuri vaellus

Suuri vaellus

Suuri vaellus

Suuri vaellus

Suuri vaellus

Suuri vaellus

With just 32 miles to the finishing line at the Mara River, the herd's gruelling 200-mile journey across the Serengeti is finally coming to its end. But with food rations down to zero, crossing the final miles could kill them. Former soldier Manu is fighting a leg infection and barely able to walk, and Jens Rasmussen is brought to his knees with suspected dysentery. Hundreds of lions, cheetahs and hyenas are stalking the final miles to the river, hungry for a quick kill. Unarmed and alone, the nearest hospital is almost 200 miles away. The human Herd must negotiate their way through the hostile predator territory to reach safety.

The Herd is 19 days and 122 miles into their epic challenge - following the great wildebeest migration across the Serengeti. But they have been stuck on the banks of the flooded Orangi River for the past two days. Determined to catch up to the wildebeest, the herd strike east in the hope of finding a crossing point. To do this, they must walk alongside the river in dense vegetation - prime predator territory. And it doesn't take long before they come face to face with one of Africa's most dangerous animals - hippos. River guide Jens spots a way across, but they must be careful not to disturb the territorial hippos - or catch the attention of deadly Nile crocodiles . The lack of food begins to have drastic effects on diabetic Robin, and threatens to break the herd apart. To stand any chance of catching up with the wildebeest, the herd must quickly move north - but will they all make it together?

The Herd is 14 days into their migration, and has just lost a sixth member. They have already encountered some of nature's deadliest predators, but now the Herd is confronted with an entirely new danger - poachers. Alarmed by the potentially deadly situation that now faces them, the Herd have no option but to push harder than ever to get out of poacher territory. Forced to travel through steep valleys and thick woodland, the brutal pace is a wakeup call to some in the Herd; and difficult decisions cause tensions to rise higher than ever. After finally managing to put distance between themselves and the poachers, the Herd make it to the banks of the Orangi River. But the storms overnight mean they wake to a new hazard - a raging torrent of water.

In the heart of Africa, 20 elite Americans attempt to take on nature and win as they join the planet's largest and most gruelling mammal migration. Their mission: walk 200 miles of the deadly Serengeti alongside 1.3 million migrating wildebeest. It's the middle of the dry season and the blistering sun is ravaging the southern plains, so to survive the wildebeest chase the rains north through Tanzania, towards the lush grasses of the Maasai Mara in Kenya. It's an incredibly dangerous journey through a landscape dominated by apex predators, including lions, hyenas and crocodiles. Tens of thousands of wildebeest won't make it - so how will the humans fare with no map, no compass and minimal supplies? 12 days into their brutal journey, 5 of the Herd has already tapped out. Now, the Herd is recovering from a lion attack on their camp and they stumble on a Wildebeest carcass just 100 yards from their camp. The main migration has moved on the Herd realise they are now on the menu. Rattled, they hustle to refill their water and push on through the plains. Racing to leave lion country with no maps, the Herd trek over a mountainous plateau and hit a 1000 foot cliff face. With limited equipment and zero options, the Herd draw on their unique skills to find a path down. As they reach the Ndoha Plains the Herd is faced with their biggest challenge yet - one of the most dangerous stretches of water in the Serengeti - the croc infested Mbalageti River.

Forty-seven miles into their 200-mile trek across the Serengeti, the human herd finds itself in challenging new terrain; a channel of granite outcrops between dense forest and the exposed open Serengeti plains. To survive they must find water, firewood and shelter, but this rocky terrain is also a habitat that appeals to lions. The herd flees a thunderstorm only to walk straight into a lioness' guarding her cubs. The herd decides to risk camping for the night, but a sudden downpour threatens to extinguish their fire - the only defence they have against predators in the dark. Unarmed, alone and more than a hundred miles from the nearest hospital, two sudden tap-outs rock the herd's safety in numbers strategy when the need safety in numbers the most. Then they face their greatest fear - being hunted by a pride of lions in the pitch black.

In the heart of Africa, 20 elite Americans attempt to take on nature and win, as they join the planet's largest and most gruelling mammal migration to cross 200 miles of the deadly Serengeti. It's May and dry season is ravaging the southern Serengeti plains. In a bid for survival, 1.3 million wildebeest race north to the lush grasses of the Maasai Mara in Kenya. It's an incredibly dangerous journey through a landscape dominated by apex predators, including lions, leopards, hyenas and crocodiles. Tens of thousands of wildebeest won't make it - so how will the humans fare? Unarmed, without a map or compass and thousands of miles from home, they will have to combine their elite survival skills and work together to overcome their first challenge: navigating north through the lethal open plains. As they battle thirst, deadly predators and each other, it soon become clear not everyone can make it.

Petojen tie. Maaliin on enää runsaat 50 kilometriä, mutta ruokaa ei ole ja leijonat, gepardit ja hyeenat väijyvät vaeltajia viimeisten kilometrien ajan.

Hajoamispiste. Ruoan puute alkaa näkyä selvästi 19 päivän ja 196 kilometrin jälkeen diabeetikko Robinissa, ja sen myötä koko lauma on vaarassa hajota.

Kuoleman laakso. Suuri vaellus on jatkunut 14 päivää, ja kuusi ovat jättäneet leikin kesken. Salametsästäjät ja Orangi-joen vahva virtaus tuovat uusia vaaroja.

Eläinten talo. Lauma on pienentynyt viidellä hengellä 12 päivän jälkeen. Matkaa jatkavilla on nyt haasteenaan krokotiilejä vilisevän Mbalageti-joen ylitys.

Leijonan luola. Ihmislauman 300 kilometrin vaelluksessa tulee haastava uusi käänne 75 kilometrin kohdalla, kun Serengetin avoin maasto muuttuu.

Tie tuntemattomaan. Planeetan rankin nisäkkäiden muuttoliike koettelee 20 amerikkalaisen ryhmää, joka pyrkii vaeltamaan yli 300 kilometriä Serengetin halki.

With just 32 miles to the finishing line at the Mara River, the herd's gruelling 200-mile journey across the Serengeti is finally coming to its end. But with food rations down to zero, crossing the final miles could kill them. Former soldier Manu is fighting a leg infection and barely able to walk, and Jens Rasmussen is brought to his knees with suspected dysentery. Hundreds of lions, cheetahs and hyenas are stalking the final miles to the river, hungry for a quick kill. Unarmed and alone, the nearest hospital is almost 200 miles away. The human Herd must negotiate their way through the hostile predator territory to reach safety.

The Herd is 19 days and 122 miles into their epic challenge - following the great wildebeest migration across the Serengeti. But they have been stuck on the banks of the flooded Orangi River for the past two days. Determined to catch up to the wildebeest, the herd strike east in the hope of finding a crossing point. To do this, they must walk alongside the river in dense vegetation - prime predator territory. And it doesn't take long before they come face to face with one of Africa's most dangerous animals - hippos. River guide Jens spots a way across, but they must be careful not to disturb the territorial hippos - or catch the attention of deadly Nile crocodiles . The lack of food begins to have drastic effects on diabetic Robin, and threatens to break the herd apart. To stand any chance of catching up with the wildebeest, the herd must quickly move north - but will they all make it together?

The Herd is 14 days into their migration, and has just lost a sixth member. They have already encountered some of nature's deadliest predators, but now the Herd is confronted with an entirely new danger - poachers. Alarmed by the potentially deadly situation that now faces them, the Herd have no option but to push harder than ever to get out of poacher territory. Forced to travel through steep valleys and thick woodland, the brutal pace is a wakeup call to some in the Herd; and difficult decisions cause tensions to rise higher than ever. After finally managing to put distance between themselves and the poachers, the Herd make it to the banks of the Orangi River. But the storms overnight mean they wake to a new hazard - a raging torrent of water.

In the heart of Africa, 20 elite Americans attempt to take on nature and win as they join the planet's largest and most gruelling mammal migration. Their mission: walk 200 miles of the deadly Serengeti alongside 1.3 million migrating wildebeest. It's the middle of the dry season and the blistering sun is ravaging the southern plains, so to survive the wildebeest chase the rains north through Tanzania, towards the lush grasses of the Maasai Mara in Kenya. It's an incredibly dangerous journey through a landscape dominated by apex predators, including lions, hyenas and crocodiles. Tens of thousands of wildebeest won't make it - so how will the humans fare with no map, no compass and minimal supplies? 12 days into their brutal journey, 5 of the Herd has already tapped out. Now, the Herd is recovering from a lion attack on their camp and they stumble on a Wildebeest carcass just 100 yards from their camp. The main migration has moved on the Herd realise they are now on the menu. Rattled, they hustle to refill their water and push on through the plains. Racing to leave lion country with no maps, the Herd trek over a mountainous plateau and hit a 1000 foot cliff face. With limited equipment and zero options, the Herd draw on their unique skills to find a path down. As they reach the Ndoha Plains the Herd is faced with their biggest challenge yet - one of the most dangerous stretches of water in the Serengeti - the croc infested Mbalageti River.

Forty-seven miles into their 200-mile trek across the Serengeti, the human herd finds itself in challenging new terrain; a channel of granite outcrops between dense forest and the exposed open Serengeti plains. To survive they must find water, firewood and shelter, but this rocky terrain is also a habitat that appeals to lions. The herd flees a thunderstorm only to walk straight into a lioness' guarding her cubs. The herd decides to risk camping for the night, but a sudden downpour threatens to extinguish their fire - the only defence they have against predators in the dark. Unarmed, alone and more than a hundred miles from the nearest hospital, two sudden tap-outs rock the herd's safety in numbers strategy when the need safety in numbers the most. Then they face their greatest fear - being hunted by a pride of lions in the pitch black.

In the heart of Africa, 20 elite Americans attempt to take on nature and win, as they join the planet's largest and most gruelling mammal migration to cross 200 miles of the deadly Serengeti. It's May and dry season is ravaging the southern Serengeti plains. In a bid for survival, 1.3 million wildebeest race north to the lush grasses of the Maasai Mara in Kenya. It's an incredibly dangerous journey through a landscape dominated by apex predators, including lions, leopards, hyenas and crocodiles. Tens of thousands of wildebeest won't make it - so how will the humans fare? Unarmed, without a map or compass and thousands of miles from home, they will have to combine their elite survival skills and work together to overcome their first challenge: navigating north through the lethal open plains. As they battle thirst, deadly predators and each other, it soon become clear not everyone can make it.

Petojen tie. Maaliin on enää runsaat 50 kilometriä, mutta ruokaa ei ole ja leijonat, gepardit ja hyeenat väijyvät vaeltajia viimeisten kilometrien ajan.

Hajoamispiste. Ruoan puute alkaa näkyä selvästi 19 päivän ja 196 kilometrin jälkeen diabeetikko Robinissa, ja sen myötä koko lauma on vaarassa hajota.

Kuoleman laakso. Suuri vaellus on jatkunut 14 päivää, ja kuusi ovat jättäneet leikin kesken. Salametsästäjät ja Orangi-joen vahva virtaus tuovat uusia vaaroja.

Eläinten talo. Lauma on pienentynyt viidellä hengellä 12 päivän jälkeen. Matkaa jatkavilla on nyt haasteenaan krokotiilejä vilisevän Mbalageti-joen ylitys.

Leijonan luola. Ihmislauman 300 kilometrin vaelluksessa tulee haastava uusi käänne 75 kilometrin kohdalla, kun Serengetin avoin maasto muuttuu.

Tie tuntemattomaan. Planeetan rankin nisäkkäiden muuttoliike koettelee 20 amerikkalaisen ryhmää, joka pyrkii vaeltamaan yli 300 kilometriä Serengetin halki.

Petojen tie. Maaliin on enää runsaat 50 kilometriä, mutta ruokaa ei ole ja leijonat, gepardit ja hyeenat väijyvät vaeltajia viimeisten kilometrien ajan.

Hajoamispiste. Ruoan puute alkaa näkyä selvästi 19 päivän ja 196 kilometrin jälkeen diabeetikko Robinissa, ja sen myötä koko lauma on vaarassa hajota.

Kuoleman laakso. Suuri vaellus on jatkunut 14 päivää, ja kuusi ovat jättäneet leikin kesken. Salametsästäjät ja Orangi-joen vahva virtaus tuovat uusia vaaroja.

Eläinten talo. Lauma on pienentynyt viidellä hengellä 12 päivän jälkeen. Matkaa jatkavilla on nyt haasteenaan krokotiilejä vilisevän Mbalageti-joen ylitys.

Leijonan luola. Ihmislauman 300 kilometrin vaelluksessa tulee haastava uusi käänne 75 kilometrin kohdalla, kun Serengetin avoin maasto muuttuu.

Tie tuntemattomaan. Planeetan rankin nisäkkäiden muuttoliike koettelee 20 amerikkalaisen ryhmää, joka pyrkii vaeltamaan yli 300 kilometriä Serengetin halki.

Petojen tie. Maaliin on enää runsaat 50 kilometriä, mutta ruokaa ei ole ja leijonat, gepardit ja hyeenat väijyvät vaeltajia viimeisten kilometrien ajan.

Hajoamispiste. Ruoan puute alkaa näkyä selvästi 19 päivän ja 196 kilometrin jälkeen diabeetikko Robinissa, ja sen myötä koko lauma on vaarassa hajota.

Kuoleman laakso. Suuri vaellus on jatkunut 14 päivää, ja kuusi ovat jättäneet leikin kesken. Salametsästäjät ja Orangi-joen vahva virtaus tuovat uusia vaaroja.

Eläinten talo. Lauma on pienentynyt viidellä hengellä 12 päivän jälkeen. Matkaa jatkavilla on nyt haasteenaan krokotiilejä vilisevän Mbalageti-joen ylitys.

Leijonan luola. Ihmislauman 300 kilometrin vaelluksessa tulee haastava uusi käänne 75 kilometrin kohdalla, kun Serengetin avoin maasto muuttuu.

Tie tuntemattomaan. Planeetan rankin nisäkkäiden muuttoliike koettelee 20 amerikkalaisen ryhmää, joka pyrkii vaeltamaan yli 300 kilometriä Serengetin halki.

Petojen tie. Maaliin on enää runsaat 50 kilometriä, mutta ruokaa ei ole ja leijonat, gepardit ja hyeenat väijyvät vaeltajia viimeisten kilometrien ajan.

Hajoamispiste. Ruoan puute alkaa näkyä selvästi 19 päivän ja 196 kilometrin jälkeen diabeetikko Robinissa, ja sen myötä koko lauma on vaarassa hajota.