This hike was nice in a few areas, especially by the river where the white dunes are.  Lots of mosquitos, so bring your spray.  Hot and humid too (duh, it's Houston in the summertine!).  Not bad, we went because it was very close to the house.  It has a nice HQ building, with interesting stuffed animals, live snakes (coral, copperhead, mocassin, etc) in glass cases.