Thanks to a recommendation from Vanholio, I blew through El Paso and headed for Hueco Tanks State Park forty-something miles east-northeast. Petroglyphs, pictographs, ruins and rock climbing. For those who don't know, a tank is a place where water forms pools in the rocks. I don't know why they're not called pools.
I'm writing this in Van Horn where I previously thought I would need to make the choice of continuing on I-10 or turning south to take slower, less hectic US90. By the time I got here, though, I had already voted for more hectic. "I'm... a... high-... way... star!"