Timber Campground, Inc is a campground in Cambridge, IL. As of Jan. 2011 John & Carla Witter became the new owners of the only campground in Cambridge, IL.. Nestled in the county seat of Henry this campground offers the beautiful sights of nature. Large mature trees surround the 50 acres of land, with a 5 acre lake within the middle of it. Open: April 15 to Oct. 15 each year. We offer sites for 30 and 50 amp service, with each site having electrical and water. Pull through sites available. Two dump stations on grounds. Many activities available including: fishing, swimming, horseshoes, exploring nature, etc.