4 - 1Echoes of the Lost Mountaineer Feb. 10, 2025
4 - 2Secrets of the Antarctic Abyss Feb. 17, 2025
4 - 3Woolly Mammoths Last Stand Feb. 24, 2025
4 - 4Battlefield Beneath the Alps Mar. 03, 2025
4 - 5The Giant Penguin Enigma Mar. 10, 2025
4 - 6The Patagonia Ice Dragon Mar. 17, 2025- 4 - 7Ice Age Battlefield Mar. 24, 2025
- 4 - 8Siberian Death Mask Mar. 31, 2025
- 4 - 9Frozen Secrets of Prehistoric Warfare Apr. 07, 2025
- 4 - 10The Donner Party's Lost Legacy Apr. 14, 2025