Gully erosion is the removal of a deep channel of soil by water running downhill.
Gully derosion is the replacement of a deep channel of soil by water running uphill. (You have to watch closely to see this though — water is tricky).
Have anything worth adding? Then try sosayseff@gmail.com
Me? Frequently not seen running uphill.
Etc...
so says eff: sporadic spurts of grade eff distraction
definitions: outdoor terms
fiyh: dave's little guide to ultralight backpacking stoves
boyb: dave's little guide to backpacks
snorpy bits: nibbling away at your sanity
last seen receding: missives from a certain mobile homer
noseyjoe: purposefully poking my proboscis into technicals