article_snippet: In order to reach the small architectural marvel, guests are required to crawl through its tunnel-like entryway, which remarkably resembles an otherworldly black hole.
article_snippet: It's name is inspired by the tuba, thanks in large part to its curved entryway that opens like a vortex to the woods outside.
article_snippet: To reach the inside of the 14-square-metre cabin, everyone must crawl through the house's 'black hole' tunnel entrance .
article_snippet: The tuba-like tunnel is not just a way to reach the cabin's interior, The tuba-like tunnel's also a play space in and of The tuba-like tunnel for children if the hut is closed .
article_snippet: The entrance is shaped like a mouth of a tuba to experiment with wood as a material, to give children a place to play even if the hut is closed, and to force adults to crouch to get in, even if kids don't have to,' architect Espen Folgero said.