This photograph (ESP_015978_2190) was taken by NASA’s Mars Reconnaissance Orbiter (MRO) HiRISE Camera on 23 December 2009.
NASA describes this photograph as “Arcadia Region Domes.”
I discovered a vast terrain covered in artifacts that look like stone discs, blocks, megaliths, perhaps even underground entrance-ways and ventilation caps.
If you like archaeology this one is definitely for you.
Pure speculation as always, these anomalies look like something unnatural and are not specifically something unnatural.
Original NASA source: https://www.uahirise.org/ESP_015978_2190
I downloaded the HiRise B&W Map-Projected JP2 file to view these anomalies.
More stone discs found on Mars: https://mars.raptorzone.co.za/2018/03/04/carved-stone-discs-found-on-mars-and-earth/
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