Terrain Deformation Grenades

Something I mentioned the other day in my talk at the Australian National Architecture Conference – and that came up again in Peter Wilson's conference summary – was the game Fracture by LucasArts.
Specifically, I referred to that game's "terrain deformation grenades" (actually, ER23-N Tectonic Grenades).

[Image: A screenshot from Fracture, courtesy of LucasArts].

The game's own definition of terrain deformation is that it is a "warfare technology" through which "soldiers utilize specialized weaponry to reshape earth to their own strategic advantage." In an interview with GameZone, David Perkinson, a producer from LucasArts, explains that any player "will be able to use a tectonic grenade to raise the ground and create a hill."

He will also be able to then lower that same hill by using a subsonic grenade. From there, he could choose to throw another tectonic to rebuild that hill, or add on another subsonic to create a crater in the ground. The possibilities are, quite literally, limitless for the ways in which players can change the terrain.

Other of the game's terrestrial weapons include a "subterranean torpedo."
In any case, if you were at the conference and want to know more about either the game or its implications for landscape design, I thought I'd post a quick link back to the original post in which I first wrote about this: Tactical Landscaping and Terrain Deformation.
While we're on the subject, though, it'd be interesting if terrain deformation weaponry not only was real, but if it could be demilitarized... and purchased at REI.
You load up your backpack with tectonic grenades, head off to hike the Appalachian Trail – and whenever the path gets boring, you just toss a few bombs ahead and create instant slopes and hillsides. An artificial Peak District is generated in northern England by a group of well-armed hikers from Manchester.
In other words, what recreational uses might terrain deformation also have – and need these sorts of speculative tools only be treated as weaponry?
If Capability Brown had had a box of Tectonic Grenades, for instance, England today might look like quite different...