Tarantula Wasp

We have tarantulas around us here in the hill country. We also have tarantula wasps. These are hummingbird sized insects that fly around looking for tarantulas to kill. I came across one the other day that just killed a tarantula and was dragging it somewhere - I assume to its lair. It headed due north and climbed straight up and over my rock wall dragging the dead tarantula.