Unusual Dunes or Structures found on Mars?

This photograph (ESP_048912_1830) was taken by NASA’s Mars Reconnaissance Orbiter (MRO) HiRISE Camera on 01 January 2017.

NASA describes this photograph as “Scoured Floor of Hydraotes Chaos Channel.”

I discovered some more strange geological anomalies in this HiRISE photo, these include what look like dunes with split ends, covered in dark material. The dunes seem to end in either v-shaped and circular walls.

Check out the ‘ship keel-type’ structure as well.

Could these possibly be artificial in some way, perhaps underground entrance-ways or the like designed to look like dunes?

Pure speculation as always, these anomalies look like something unnatural and are not specifically something unnatural.

Intersecting structures
Intersecting structures (click for larger image)
Split-end structures
Split-end structures (click for larger image)
Dust-covered structure
Dust-covered structure (click for larger image)
'Ship keel-type' structure
‘Ship keel-type’ structure (click for larger image)
'X'-shape intersecting structures
‘X’-shape intersecting structures (click for larger image)
Split-end, triangular pyramid-type structures
Split-end, triangular pyramid-type structures (click for larger image)
Split-end structures with triangular object against wall
Split-end structures with triangular object against wall (click for larger image)
Circular structures
Circular structures (click for larger image)
Split-end structure
Split-end structure (click for larger image)
Split-end structure
Split-end structure (click for larger image)
Split-end structure
Split-end structure (click for larger image)
Split-end structure
Split-end structure (click for larger image)
'The Squid' split-end structure
‘The Squid’ split-end structure (click for larger image)
Triangular, pyramid-type structure
Triangular, pyramid-type structure (click for larger image)
Open-pit mining quarry
Open-pit mining quarry (click for larger image)
Circular feature
Circular feature (click for larger image)
Split-end circular structure
Split-end circular structure (click for larger image)
Disc-like objects against crater wall
Disc-like objects against crater wall (click for larger image)

Original NASA source: https://www.uahirise.org/ESP_048912_1830

I downloaded the HiRise B&W Map-Projected JP2 file to view these anomalies.

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