Summary:
- NASA's Curiosity Mars rover has taken a final look at a mysterious sulfur-rich rock formation before moving on to its next destination.
- The rock, nicknamed "Sulfur Springs," is located in an area called the "sulfate-bearing unit" and is believed to have formed in the presence of water.
- Curiosity's observations of the rock formation will help scientists better understand the geological history of Mars and the potential for past habitability.