However , such adaptations are comparatively recent : these mountains were formed from the sea bed some 65 million years ago .
The higher that Attenborough travels , the more bleak and mountainous is the terrain , and the more suited to it are the animals that live there .
Such adaptations are comparatively recent : these mountains were formed from the sea bed some 65 million years ago .
The higher that Attenborough travels , the more bleak and mountainous is the terrain , and the more suited to it are the animals that live there .