Underground Entrance-Ways and Bridge/Pipe on Mars?

This photograph (ESP_035475_1830) was taken by NASA’s Mars Reconnaissance Orbiter (MRO) HiRISE Camera on 19 February 2014.

NASA describes this photograph as “Landform Transition from Chaos Terrain to Outflow Channel.”

I discovered what looks like underground entrance-ways, objects inside craters/pits, signs of recent activity on the Martian surface, a self illuminating sphere, various other potential technology/debris and perhaps a bridge or pipe.

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

‘Good eye! The way I see it (NO pun intended!) all of these things deserve a closer look. Thank you for pointing them out.’ CitizenQuasar: Moderator: whatsupinthesky.com

Underground Entrance?
Underground Entrance? (click for larger image)
Underground Entrance, Self-Illuminating Sphere and Cylindrical Object?
Underground Entrance, Self-Illuminating Sphere and Cylindrical Object? (click for larger image)
Underground Entrance, Machined Surface and Triangular Object in Entrance-Way?
Underground Entrance, Machined Surface and Triangular Object in Entrance-Way? (click for larger image)
Underground Entrance and Machined Surface?
Underground Entrance and Machined Surface? (click for larger image)
Underground Entrance and Machined Surface?
Underground Entrance and Machined Surface? (click for larger image)
Underground Entrance?
Underground Entrance? (click for larger image)
Underground Entrance and Bridge or Pipe?
Underground Entrance and Bridge or Pipe? (click for larger image)
Evidence of Liquid Flow or 'Other' Activity on Crater Wall?
Evidence of Liquid Flow or ‘Other’ Activity on Crater Wall? (click for larger image)
Underground Entrance, Rectangular Object and Other Technology/Debris inside Hole?
Underground Entrance, Rectangular Object and Other Technology/Debris inside Hole? (click for larger image)

Original NASA source: https://www.uahirise.org/ESP_035475_1830

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

Are these natural geological formations or perhaps sign’s of some kind of activity on Mars?

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