Last month, Steve and I spent a few nights in Sedona with our pals Lance and Margo. We checked out three ruins: the pueblos at Tuzigoot and Wupatki, and the cliff dwelling at Montezuma's Castle.
We were especially fascinated by a blow hole at Wupatki. When the air temperature or pressure is lower above ground than below, air blows out of a hole in the ground at a pretty fast clip. The hole can also inhale when the conditions are reversed. Steve and I couldn't get enough of watching our hats fly away.
