In Enterprise's episode arc The Forge / Awakenings / Kir'shara , Captain Archer and T'Pol enter The Forge, a desert on Vulcan described by Tucker as:
TUCKER: It's got electrical sandstorms. Geomagnetic instabilities so bad, technology won't work. So, no communicators, no scanners, no phase-pistols. We can't even beam you into it. You're going to have to walk in.
This is further demonstrated by Vulcan patrol ships:
T'POL: The dampening field only extends a few hundred metres above the ground. Patrol craft can fly over it, but their sensors can't see us.
Yet, the compound they are looking for, located within this wasteland, is protected by a forcefield of sorts:
T'POL: It's almost dawn. We need to find someplace to hide.
ARCHER:Over here. (A rock face.)
T'POL: That won't help us.
(He walks through the rock face, and T'Pol follows and enters T'Kareth Sanctuary)
How could they have erected and maintained a forcefield in this environment?