Leonvalley campground 9050 Jancing Ave, Sparta 54656. 608-269-6400. April - October. E-mail firstname.lastname@example.org, wwww.campleonvalley.com, Bernie and JoAnne Waege. From J-90 Exit 25 S on HWY 27, 3 1/2 miles to Leon (in Leon). Left on Jancing Ave. 1 mile. Rate Range $18.00-$28.00. WACO Satisfaction Guarantee. 80 acres of wooded sites nesteled in Hidden Valley Country. 130 sites 20, 30, 50 Amp, Camp Store, Showers, Cabins, Heated Pool, Dump Station, Wood for Sale, Credit Cards Accepted. Recreation: Swimming, Pool, playground, horsehoes, hiking, trails, volleyball, basketball, game room. Nearby, canoeing, two state bike trails, horseback riding, summerfestivals.