The Caddo Lake State Park is the only true natural lake in Texas. Although the story is that the lake was formed by a giant log jam. The park and lake are notable due to the Cypress trees and Spanish moss that surround much of the lake. The park has campsites with full hookups, campsites with electricity and water and campsites with just water. I visited in July and had no problem finding a campsite. There are some hiking trails, but the main recreational activities center around the lake. In the nearby small town of Uncertain there is the Johnson Bait Shop where you can rent a canoe, kayak or boat to explore the lake. Within the state park, one can fish without a fishing license. There are a few piers from which to fish or one can fish from the shore. Be aware that there is poison ivy in the area and along the shore, so learn to identify it and stay away from it.