One of the most fun periodical cicada experiences is watching thousands of nymphs emerge from the ground at night, crawl to the nearest vertical surface (hopefully a tree) and begin to molt.
This is a video by Roy Troutman from 2007 of the Brood XIII emergence, specifically in Ryerson Woods in Illinois:
Observing magicicada emergence at Ryerson Woods from Roy Troutman on Vimeo.
Here’s a time-lapse video, also by Roy, of a cicada nymph molting:
Magicicada nymph molting from Roy Troutman on Vimeo.
This is an amazing video!