National Parks after dark Podcast

Bob and Sue podcast

https://www.indianadunes.com/blog/post/dunes-101-did-you-know/

https://outdoors.com/5-things-you-didnt-know-about-indiana-dunes-national-park/

https://www.indystar.com/story/news/2019/02/15/indiana-dunes-becomes-national-park-after-century-long-effort/2882357002/

https://www.panish.law/nevada/deaths-in-us-national-parks/

http://npshistory.com/morningreport/incidents/indu.htm

https://www.nps.gov/indu/index.htm

https://www.nationalparked.com/indiana-dunes/visitation-statistics

https://www.atlasobscura.com/places/mysterious-sinkholes-of-mt-baldy

https://www.smithsonianmag.com/science-nature/mystery-why-dangerous-sand-dune-swallowed-boy-180953404/

https://www.iflscience.com/the-mystery-of-how-a-sand-dune-sinkhole-swallowed-a-child-on-mount-baldy-69169

https://www.iflscience.com/the-mystery-of-how-a-sand-dune-sinkhole-swallowed-a-child-on-mount-baldy-69169

https://www.smithsonianmag.com/science-nature/mystery-why-dangerous-sand-dune-swallowed-boy-180953404/

https://www.atlasobscura.com/places/mysterious-sinkholes-of-mt-baldy

https://www.indianadunes.com/explore-the-dunes/indiana-dunes-state-park/3-dune-challenge/

https://www.panish.law/nevada/deaths-in-us-national-parks/

https://www.google.com/search?q=singing+sand+dunes+of+indiana&rlz=1C1ONGR_enUS1072US1073&oq=singing+sand+dunes+of+indiana&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIHCAEQIRifBdIBCDcxNjRqMGo3qAIAsAIA&sourceid=chrome&ie=UTF-8

http://npshistory.com/morningreport/incidents/indu.htm

https://www.insidescience.org/news/strange-holes-indiana-dunes-americas-newest-national-park

https://thefroglady.org/2018/02/19/frogs-and-toads-of-indiana/

https://www.onlyinyourstate.com/indiana/singing-sand-dunes-in/

https://koa.com/campgrounds/muskegon/blog/-interesting-and-fun-facts-about-lake-michigan_f0c82018-a446-4686-98de-ec4c767f5ae1/

https://www.wanderingeducators.com/best/stories/shipwrecks-great-lakes-lake-michigan-triangle