The Lost Treasure Map 5 — V. Bertolaccini

Astronauts map Mars with a new highly advanced technology and find a crashed space vehicle, hidden in a small meteor crater, and investigate it and find a map, a treasure map, which brought its dead astronauts there, searching for diamonds, which a scientist detected with a new highly advanced satellite, and their deadly search for the diamonds begins!

Astronauts map the surface of Mars advancing and testing a new highly advanced technology and are at the Martian Antarctica when something strange is detected.
They discover a crashed space vehicle, hidden in a small meteorite crater, and they investigate it and discover its an old rocket vehicle that crashed there, and discover a map, a treasure map, which brought them there, searching for diamonds, which a scientist discovered there with a new highly advanced satellite.
When they return to their Martian base they check out the dead astronauts they found, and why they were there, and discover hundreds of declassified military and security service material buried away in an old library and they start answering their escalating unanswered questions.
They find documents on the astronauts and them illegally taking the rocket vehicle and their disappearance, but they unsuccessfully discover if they had anything in the Antarctica region of Mars that could have caused the crash, and they discover the location was the wrong place the diamonds were detected, by the satellite!
When all the shuttles are put on a mission to create a highly advanced map of Mars they grasp the chance to return to the Antarctica section, but the other astronauts find out about the diamonds and the treasure map and a race begins to get it first!