Tripartite Obelisks
Level 2 – Bergie Web
Possibly related to the monolith on Phobos. Also, listen to Buzz Aldrin closely 30 seconds in this video.
LINKS
http://www.bbc.com/earth/story/20160923-there-is-a-huge-monolith-on-phobos-one-of-marss-moons