As long as any can remember, these certain paths allowed one to travel up to and over 20 extra miles a day by using them. One moment one was deep along a small trail, the next he would find himself 20 or more miles farther down the path without realizing it. All was fine until recently. Reports returned talking of the failure of these areas which revealed miles of ancient paths. The protection hiding them has finally failed. Will it release monsters of ages past or reveal magic of unknown worth?
The multiple-worlds theory of cosmology allows room for every religion's Heaven and Hell and other planes to coexist, with the similar planes of all the sapient beings of all the worlds in all the galaxies...How often do the wires get crossed, as it were, leaving your paladin in a Hell for hedonistic lizards, for example.