see a few seconds of "LIIIM" in operation here.
"LIIIM" running mock-up with ski-walking propulsive device (1975)
Running mock-up was created in accordance with the "Mars-75" program.
Purpose: investigation of the ski-walking method of motion over powdered soil having low bearing strength.
Each ski has two electromechanical drives.
Mass…………………………………………240 kg
Overall dimensions……………….………..2×1.7 m
Travel speed……………….…………….0.25 km/h