Drive to the end of the Soccer fields and take the trail up to the top of the hog's back (Ridge). Nothing too crazy to crawl but it is a fun trail!
A great place to trail run/crawl! Tons of rock formations to crawl and more slabs to play on up top! *Caution* I don't believe Jeff Co Open Space allows RC cars, but the only time I've been bothered was by a Jeff Co Open Space worker who was helping paramedics give aid to an injured biker. I mountain bike here frequently and never see anyone but hikers.