Oh, I see. I was trying to get to it for a while, because I forgot about the other lever, so I thought this was the only way to go forward.
Once I did go back...I reached a point where I had to set it aside (and there may have been an actual bug, where I pushed the burner up against the angled wood, and it seemed to get stuck there and I had no way out; I just stood on the burner until I ran out of health and could reset). There's a lot I like in here, with the opening of passages and new jumping platforms and so forth. It's also just a little daunting at the moment.