wmpe2000:
remains of a bird nest that once was inside a saguaro - the bird excavates the saguaro flesh and the saguaro creates a callus skin around the wound that remains when the saguaro dies
wmpe2000:
near the summit (4,273 feet) of the 107 acre mesa at the top of Table Top Mountain, the landscape changes from cacti, palo verde trees to a new landscape of agaves, yuccas, grasses and ocotillo - a true sky island and unique biome
