Mystery Hole on Mars’ South Pole

When reports of strange landscape features spotted on the Martian landscape come in, they usually come from the same old YouTube-based armchair sleuths. Now that Google Mars lets anyone with an internet connection pore over the Martian surface for rocks that look like ancient buildings, rocks that look like alien spacecraft, or rocks that look like weird rocks. This week, however, NASA’s own Jet Propulsion Laboratories have published images taken…