With five sar missions in the last week, I left town (and cell service) for the weekend. Destination: Hartley Springs Campground. Located about 20 minutes north of Mammoth Lakes the decided (as best I’ve been able to tell) lack of a “spring” is the reason I wanted to go there. The intense 16/17 winter has left snow everywhere, even in July. Much of it will stick around until next summer. With that snow is melt, and with that melt is water. Combine warm summer air and you get mosquitoes: lots and lots of mosquitoes.
I can handle mosquitoes but purposefully putting myself into the midsts of clouds of them is insane. Yes, I know about permethrin and DEET. I use a tent. I have coils. But “managing” mosquitoes for a weekend is tolerable but best avoided altogether.

Not only is there no natural water in Hartley Springs Campground, but there’s also no plumbed water: you need to bring all your own. There’s also no trash cans, no bear boxes, and no real anything. Some porta-potties, picnic tables, and a fire ring is about as fancy as it gets. The upshot is that it’s free to stay there and maybe 10 minutes from June Lake (20 from Mammoth Lakes) if you forget anything or just want to buzz into town for a bit.
It was also packed: we got the last spot when we showed up on a Friday around 4pm. It’s a haven for dirt bikers and 4x4s as well, so expect lots of poorly muffled exhausts blaring around you. Not in a horribly obnoxious way, but definitely in a you’ll-know-you’re-around-dirt-bikes sort of way.

Verizon has a bit of coverage there, but no dice for AT&T. We had come through here a couple of months ago and there were little snow patches around so I safely bet that by now it should be bone dry and indeed not a single mosquito was found.
So especially in the non zany busy season if you’re looking for a free campground and can handle your own water and trash, give Hartley Springs a once-over. There’s a bit of dirt roading to do on the way in, perhaps a passenger car might have a tough go of it, but any AWD should be fine. I think I saw a couple 2wd passenger cars; I’d certainly give it a shot. If you do go up in a 2wd perhaps stick to a busier time period so that if you get stuck there’s a high likelihood that someone can help you out.