While the shape is interesting, I’d say that this looks more like a retention pond, where solid wastes are broken down in still water. This particular area is part of Naval Air Station China Lake, (grandpa was stationed there many years ago, but I can’t find any photos, just discharge paperwork). It could also be a cistern or some other water source, there’s a lighter rim around a darker hole, which from a satellite image, is a sign of a change in depth.