Of course, it doesn't change the fact that the Soviets made the first successful (secret) Mars landing in 1978. The landing site was at the highest point of Olympus Mons (chosen for a symbolic reason, obviously). Unfortunately, the collapse of the USSR forced the demise of the Soviet Manned Mars Exploration Program (SMMEP). They only landed on Mars 7 times between 1978 and 1989; after the last crew returned home the project was abandoned due to lack of necessary funding. A permanent base was planned- the hope was to colonize the planet before NASA knew what hit them.