Yeah. You feel the shaking now, but aren't completely overtaken by it. Maybe the
ends of the carts have two swinging doors that
open up and lay flat against the side walls. When the miners are ready they open one
end, shovel all the crystals in, and then
close the door. When they send the carts back down the tunnel they leave both doors
open so they're more aerodynamic. ;-)
Andrew Wilcox
