Tuesday, October 4, 2022 Mosca campground; this is a Colorado state wildlife area(SWA). You will need and I was personally asked by the camp host to show my seasonal SWA pass. These are very easy to get for as little as 10 bucks if you are a senior or a junior. You can logon and order one they will ship it to you. You can stop in one of their offices and pick one up.
I spent a long time in September 2022 in loop B. There are signs indicating you need the pass to camp here but there were no signs about any limit to your stay unlike BLM and USFS which is commonly two weeks. It is fascinating to watch the weather move through the San Luis valley between the Sangre de Christo mountain range to the east and the San Louis mountain range to the west. At the entrance the sign says San Louis lake wildlife area. At one time this was a state park called San Louis Lake State Park. This park still has the paved loops with mostly gravel, some paved pull offs and drive-through's with electric pedestals, but the water has been turned off. The pit toilet I checked was locked. Even on Labor Day the park was less than 1/3 busy. The lake was completely dry but there were a few puddles after rain storms for the mosquito population to stay healthy. The lake is stocked when there's water in it. Alamosa is 20 miles away with a Walmart and anything else you might need. Also nearby are several attractions including the great Sandune's national park, Zapata falls with a campground, the Colorado reptile zoo, the UFO watch tower, and several public lands camping areas.