An intriguing object on the martian surface has been identified in photos sent back by the Mars Reconnaissance Orbiter.

The Mars Reconnaissance Orbiter (MRO) is a $720 million spacecraft that left Earth in August 2005 and entered Mars’ orbit on March 10 the following year. In the 11+ years it’s been in service, the MRO has managed to send back thousands of incredible images, some of which might contain clues regarding the mysterious planet’s controversial past.

One of these is the image titled PSP_010329_1525. A very unassuming name for a photo that shows what appears to be a spherical, artificial structure.

PSP_010329_1525 was taken from an altitude of approximately 200 miles so the image covers a vast area known as the Uzboi Vallis. Nowadays, the Uzboi is a mostly dry valley that is sometimes peppered with seasonal ponds and small streams. Yes, on occasion, Mars still has…