[breily]

This seems pretty innovative, but how do they stop the rockets when they get to the other side? Seems like a very dangerous method.

[trickjarrett]

Giant catchers mitt ordered from ACME!

In all seriousness, the mountain takes care of that for them I suspect. It's probably burned all the fuel in flight and thus they just have to stand clear once it lands on the other side.

[tlrobinson]

Tie the other end of the cable down, make sure it's the appropriate length?