The first Hays County - owned preserve includes 81.5 acres surrounding the Jacob's Well artesian spring. This ecological resource is the most significant and largest continually flowing karstic spring in the Texas Hill Country. Wildlife depend on the spring, which forms the headwaters of Cypress Creek, a few miles north of Wimberley, Texas. Limestone cliffs and native vegetation surround the spring with enchanting beauty for visitors of all ages. We hope you enjoy this popular recreational area and educational, ecological resource. Located just outside of Wimberley, it is open year round for exploration.