Showing posts with label san luis potosi state mexico cave shaft world swallows swifts parakeets. Show all posts
Showing posts with label san luis potosi state mexico cave shaft world swallows swifts parakeets. Show all posts

Tuesday, 27 April 2010

san luis potosi state,mexico

cave of swallows
over 1,000 feet drop,largest cave shaft in world.
swifts and parakeets live inside.