There is interesting finding on one of the NASA images from moon. The Soviet Union landed Lunokhod 2 on the moon in January 1973, a month after the last American moonwalk. As the name suggests, it was the second of two solar-powered robotic rovers the Soviets sent to the moon.
These tracks, made by the Soviet moon rover Lunokhod 2, as well as the rover itself were spotted by University of Western Ontario professor Phil Stooke. He found them by comparing recently-released images of the moon from NASA’s Lunar Reconnaisance Orbiter to his own book The International Atlas of Lunar Exploration.