Park property also contains the ruins of Mission Nuestra Se ora del Rosario, established in 1754, located four miles west of Goliad on US Highway 59. The Mission is closed on Christmas Day. The brushland contrasts sharply with the luxuriant gallery woodlands of the San Antonio River floodplain. Birdlife along the trail is especially varied, due to proximity of diverse habitats and to the mild regional climate. There is a designated wildlife viewing area.
Current conditions including fire bans and water levels can vary from day to day.