Hey, I think they are about to discover Deryni on Lost island. A
recent comment:
In witchcraft, things like this ring of dirt are called "casting a
circle." One of the purposes of casting a circle is to contain the
energy of whatever spiritual forces are inside the circle. The
circle
is believed to represent a dividing line between two alternate
dimensions or two alternate realities.
In ancient religions, there was a related concept called "magic
wards."
The Mage would set the wards as a barrier to undesired spirits from
crossing it. If you ever played some of the fantasy online role-
playing
games, you might encounter magic wards.
Heck, even the Hebrews did something like that. Remember how they
smeared blood on their doorways to prevent the Angel of Death from
killing their firstborn when he slew the firstborn of Egypt?
