This photograph (ESP_022645_1505) was taken by NASA’s Mars Reconnaissance Orbiter (MRO) HiRISE Camera on 27 May 2011.
NASA describes this photograph as “Bedrock Exposures in Nirgal Vallis.”
I discovered some more strange anomalies in this HiRISE photo, these include what look like a small pyramid, an oblong creature/craft, a long narrow pipe with strange objects attached at each end, a dam, debris from a statue or craft perhaps and what are potentially tall plants.
Pure speculation as always, these anomalies look like something unnatural and are not specifically something unnatural.
Original NASA source: https://www.uahirise.org/ESP_022645_1505
I downloaded the HiRise B&W Map-Projected JP2 file to view these anomalies.
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