Spring Valley Caverns



Hiawatha Caverns is a highly decorated cave which was discovered in 1962 by workmen who were grading an easement for overhead power lines. Shortly thereafter, this highly decorated cave was commercialized and opened for tours in 1964. Due to unsustainable sales the cave was locked up after the 1966 tourist season. The Minnesota Cave Preserve purchased the cave in 2019 and restoration and exploratory activity is now taking place.

Download the STORY

Read the HISTORY


Original Brochure
Click for larger view

Original brochure.

Purchase day, August 10, 2019. Notice the original ticket building in background.
Purchase Day
Click for larger view  
Isn't he a dream!
Click for larger view

John Ackerman in front of the original entrance, which has since been replaced.

Martin Larsen conducts laser measurements for the new entrance.
Martin Larsen
Click for larger view  
Amazinf formATIONS.
Click for larger view

This amazing cave dates back to the Lower Ordovician Period of the Paleozoic Era, some 410 to 520 million years old.

The cave is festooned with formations!

Click for larger view  

Hiawatha Caverns History