The Grandest Canyon
- Episode aired Mar 3, 2016
- 11m
When the Propulsions are forced to watch a slide show of the Petersen's vacation to the Grand Canyon, they're inspired to take their own trip to Mars to explore Valles Marineris-the largest ... Read allWhen the Propulsions are forced to watch a slide show of the Petersen's vacation to the Grand Canyon, they're inspired to take their own trip to Mars to explore Valles Marineris-the largest canyon in the Solar System!When the Propulsions are forced to watch a slide show of the Petersen's vacation to the Grand Canyon, they're inspired to take their own trip to Mars to explore Valles Marineris-the largest canyon in the Solar System!