There are many shelters along the trail that are different than all the rest. I enjoyed my stay at Dick's Dome Shelter around a day north of SNP. As I approached the shleter it appeared to be collapsing but upon closer inspection just has an unually design. The log book was full of debate on if it was a true geodesic dome or not and the consensus was no. The floor was in the shape of a pentagon with many bulging triangular walls. The entire outside was shingled. One of the smaller shelters on the trail also, I can't see more than four people comfortably fitting... although more in a storm is always possible.
-Early Bird