6 in Travel Jewel Cave National Monument by Chris B. August 29, 2017, 7:29 am 263 Views 7 Votes 8 Comments Share Tweet Pin Jewel Cave, South Dakota was discovered in the 1900. It was declared a National Monument in 1908 by President Theodore Roosevelt. The pictures below are from our visit during the summer of 2012. Read LaterAdd to FavouritesAdd to CollectionReport What do you think? 7 points Upvote Downvote Share Tweet Pin Written by Chris B. Energy Dependence Day - Two countries, different in almost every way, yet bound by the common thread of oil. #author #book #ebooks #thriller youtube 8 Comments Leave a Reply Leave a Reply Cancel replyYou must be logged in to post a comment.