At last, an honest-to-goodness cave on Mars
Well, more of a rock overhang, than a cave, but still a nice sheltered spot.
New MGS release
I don't see hard evidence for the overhang but it's certainly quite possible and maybe even likely.
Those who get enthusiastic about such things will note the association with gullies on the slope. Whether you prefer CO2 ice and gas-lubricated flows or water ice and conventional flows, it's still an interesting association.