In the next scene, our intrepid Yeti extraction crew is doing more Yeti extraction, now raising the giant iced yeti with a crane; he's more human shaped and less block shaped now. The Fourth Doctor tells the audience that the ice preserved his brain function.
We meet another guy, yellow jacket guy, who I think is the Male Jock Lead character, besides the Fourth Doctor's Male Nerd Lead character. We learn that matching set children are siblings.