With $1 million park overhaul looming, Mammoth Fest set to begin Stephen Huba Thursday, May 30, 2019 3:32 p.m. | Thursday, May 30, 2019 3:32 p.m. Go Ad-Free Today! Dan Speicher | Tribune-Review Gavin Geyer, 3, of Ligonier Township, laughs as he makes his way down the Mammoth Park Giant Slide in Mt. Pleasant Township in August 2018. Submitted A 3-D conceptual drawing of the new Mammoth Park Giant Slide, which actually will be three slides. Share this post: Facebook Twitter LinkedIn Reddit Email