SOON.
I've finished the mural and torched as many caves as I could find, so, opening soon.
I've been camping to get some loot from my labor, but have no idea what the average drops/hr is. I'm sure it's a lot less than the YouTube people that build something in the middle of nowhere and don't have to contend with 'real-world' issues like packs of squid spawning in the ocean, but I bet it's a bunch.