[masraum]

It looks like the jeep didn't just get stuck there. It looks to me like it got stuck in running water, and sat there as the water receded and thoroughly buried the bottom half of the jeep. It the jeep had just rolled into the mud, wouldn't there have been ruts, tracks and probably mud flung everywhere from spinning tires?

My guess is that the guy got stuck and they left the jeep there for a while, and then tried to get it out after the mud and silt had settled around the suspension, running gear, tires, etc... Or maybe not, I don't have a lot of experience driving around in that sort of stuff.