That's Black Mesa. You need to add "New Mexico" to avoid Half-Life references. It's sacred. You need permission from the Santa Clara Pueblo if you want to climb it and I don't know if they do that anymore.
Before the Internet, we were told that Valle Grande was the biggest caldera in the world. Apparently it doesn't even rate. That was okay because back Old Man Baca or one of his ranch hands would shoot at you if you crossed the barbed wire to check it out so the place could be Shangri La and you'd never know. We used to drive through on our way to Jemez Springs all the time but it was fuckin' no man's land. Now? Now it's a national park. It's also where Walt Longmire's cabin sits.
I don't know what I'd tell you about the hiking nowadays. Most of it has burned two or more times since I left. I can tell you it's pretty fuckin' weird when your roommate texts you a picture of one of your old high school party spots because he's shooting a Chris Helmsworth movie there.