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Lost Lake Disappears Down 3 Holes Into Subterranean River

OPB | Broadcast: Nov. 12, 2015

A lake in the Cascades has several holes in it that look and act like bathtub drains.  

Geologic Snowflake Hunters Flock To Oregon For Thundereggs

OPB | Broadcast: Oct. 31, 2013

Rock hounds flock to Oregon from around the world to find thundereggs.