Ripley's Believe It or Not by Ripley’s Believe It or Not! for October 04, 2014
Mysterious island! Chelan in May 1962, an island made from mud and clay mysteriously appeared in Seattle's Lake Union- it was claimed by students who named it Chelan Island, electing a mayor and council, before it disappeared into the lake. On Vashon Island in Washington state, a Douglas fir tree has grown around a bicycle and bedded in its trunk! Seattle is home to a mysterious underground city in which many streets and storefronts, damaged in the great Seattle fire of 1889, are preserved below street level.