90% of the worlds rocks and minerals can be found in the Black Hills.
https://www.fs.usda.gov/activity/nebraska/recreation/rocks-minerals/?recid=10603&actid=73
LOOKING FOR THINGS TO DO NEARBY? SEARCH HERE!
90% of the worlds rocks and minerals can be found in the Black Hills.
https://www.fs.usda.gov/activity/nebraska/recreation/rocks-minerals/?recid=10603&actid=73