In the next scene, the Fourth Doctor is walking into the flamethrower command center for a 1970s video conference with the Large Rich Guy, who is dressed more normal. We learn that the hairy guy in the ice block is indeed a Yeti, which in Canada is called the Sasquatch and this is a big discovery.
Another big discovery is that 1970s video conferencing equipment looks awesome. Shout out to clunky retro technology.