This made this post several weeks ago as we were designing the blog, but the formation was so interesting that I thought I would leave it.
While we were walking just past the pay station, we saw this interesting structure that from the back looked like a big mound of snow, but the shape was too symmetrical for that. When we took a closer look we saw this--I guess it must have been the remains of a melting igloo that someone build earlier. A day or too later it snowed and created what is below. Someone created an outdoor sculpture without even realizing it :)