Spring Valley Caverns


Fountain Spring Cave

Located in southeastern Minnesota, the Minnesota Cave Preserve owns an amazing sinkhole, which had been excavated by hand in the 1930's in hopes of discovering a cave worthy enough to commercialize. The deep sinkhole on this 0.4 acre forested property had been abandoned a long time ago, and although it had been reported that a cave was indeed discovered here, all details were lost. The sinkhole had since collapsed, and it became John Ackerman's obsession to find out exactly what, or if, anything had been discovered at the base of this sinkhole.

Read the STORY