The Vault of Glass

The Vault of Glass is a massive, intricate, and labyrinthian structure located in Ishtar Sink on the planet Venus. The construction is theorized to have once served as the primary stronghold of Grandmaster Marsh throughout his conflict with The Challenger.

Discovery
The Vault of Glass was accidentally discovered by a joint expeditionary force affiliated with SpaceX and NASA. After mission control received information of the discovery, the expeditionary crew was apparently ordered to immediately distance themselves from the structure and leave the planet due to the emittance of an unknown, but incredibly powerful energy coming from deep within the construct.

Expeditions
Upon its discovery, only two expeditions were carried out to glean more information from the enigmatic structure. After the fate of the second expedition, all further contact with the Vault of Glass was subsequently prohibited by all countries on Earth. The first expedition was carried out by the Russian space agency, Roscosmos, and the second was under the United States Military's Outer Space Division.

The following transcripts contain the events from both expeditions.

Expedition 1 экспедиция одна: операция претор (Operation Praetor) Description (translated)

Six cosmonauts from Roscosmos' special operations division were deployed on Venus to investigate the mysterious structure found in Ishtar Sink. Body cameras and audio equipment were given to each cosmonaut to wear to allow a live feed to be produced for mission control on Earth. The expeditionary crew arrived at Ishtar Sink approximately 14 hours from departure from Earth. The cosmonauts observed three stone pillars, each encircled by a bright light, and intricately carved with similar bright lines of light. In the apex of the three pillars lies a massive circular door made of an unknown metal. The cosmonauts spent 4 hours examining the pillars and the door. Upon splitting up and examining all 3 pillars simultaneously, the lights beneath each pillar brightened significantly and a towering spire began to slowly construct itself in the focal point of the 3 pillars. Shortly after this discovery a loud, robotic screech followed by flashes of strong purple light were detected by the cosmonaut's audio and video equipment before all crew members' failed to reply to mission control. Mission control deemed all of the crew K.I.A.

Expedition 2