Two brown bear cubs on their mother's back in Hallo Bay. (credit: National Geographic/John Shier)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_149.jpg
A brown bear walking along a river, looking at migrating salmon. (credit: National Geographic/Dawson Dunning)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_96.jpg
Mount Katmai crater rises above the clouds in Katmai National Park. (credit: National Geographic/Daniel Zatz)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_55.jpg
A meandering river in Katmai National Park. (credit: National Geographic/Daniel Zatz)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_69.jpg
Novarupta at the center of The Valley of Ten Thousand Smokes. (credit: National Geographic/Daniel Zatz)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_40.jpg
A large school of migrating salmon. (credit: National Geographic/Dawson Dunning)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_93.jpg
Mount Kaguyak in Katmai National Park. (credit: National Geographic/Daniel Zatz)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_78.jpg
A plane flying over The Valley of Ten Thousand Smokes. (credit: National Geographic/Jeff Reed)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_79.jpg
Two members of the National Geographic Expedition to The Valley of Ten Thousand Smokes climbing the slopes of Mount Katmai. (credit: National Geographic Society)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_171.jpg
Basecamp for the National Geographic Expedition to The Valley of Ten Thousand Smokes. (credit: National Geographic Society)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_159.jpg
A plane flying over Mount Martin. (credit: National Geographic/Jeff Reed)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_84.jpg
Mount Katmai crater in Katmai National Park. (credit: National Geographic/Daniel Zatz)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_52.jpg
Mount Katmai crater in Katmai National Park. (credit: National Geographic/Daniel Zatz)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_46.jpg
A female pink salmon migrating upriver. (credit: National Geographic/Dawson Dunning)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_85.jpg
Three members of the National Geographic Expedition to The Valley of Ten Thousand Smokes standing near a large steam vent. (credit: National Geographic Society)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_166.jpg
A semipalmated plover parent standing over its nest with three eggs. (credit: National Geographic/Dawson Dunning)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_101.jpg
A grey wolf chasing salmon in a shallow river. (credit: National Geographic/John Shier)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_21.jpg
A grey wolf walking along Katmai's coast. (credit: National Geographic/John Shier)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_09.jpg
A grey wolf walking along Katmai's coast. (credit: National Geographic/John Shier)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_08.jpg
A semipalmated plover chick hatching. (credit: National Geographic/Dawson Dunning)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_100.jpg
A brown bear sow and her three cubs on Ninagiak Island. (credit: National Geographic/John Shier)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_112.jpg
A semipalmated plover parent sits on its nest. (credit: National Geographic/Dawson Dunning)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_104.jpg
A newly-hatched semipalmated plover chick. (credit: National Geographic/Dawson Dunning)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_111.jpg
A brown bear sow and her three cubs crossing to Ninagiak Island. (credit: National Geographic/John Shier)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_120.jpg
A grey wolf carrying a large salmon. (credit: National Geographic/John Shier)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_28.jpg
A grey wolf and a brown bear looking at each other while a bald eagle sits above. (credit: National Geographic/John Shier)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_15.jpg
Three brown bear cubs in the grass of Hallo Bay. (credit: National Geographic/John Shier)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_01.jpg
A brown bear sow and her three cubs crossing to Ninagiak Island. (credit: National Geographic/John Shier)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_121.jpg
A brown bear sow with two cubs on her back in Hallo Bay. (credit: National Geographic/John Shier)Episode: #03 "Yellowstone"Air Date 09/15/2024203_Katmai_NationalParksUSA_137.jpg
