How many beautiful, rustic shelters in remote parts of wilderness areas does the National Park Service have? I bet they have a fair number, many of which might be fun to visit - and even in the middle of winter. And how many libraries does the NPS have? I bet they have some and that they're fascinating and unique as well. Bliss exploration opportunities?
Blissing in wilderness?
(http://scott-macleod.blogspot.com/2010/07/bear-cave-how-many-beautiful-rustic.html - July 7, 2010)