Collective name for a number of holes that act as back entrances to the Goblin Caves.
The holes located within Birch Run actually lie above Manannan's Lair near the Dragon's Lair further proving that the lair is part of the Goblin's kingdom.
It is not entirely clear but it appears that Alexander and Graham boarded up the Goblin holes at one point.... However Goblins may have kept breaking through the barriers and even started to build new colonies in Daventry in Birch Run.
Goblin holes are also located near the Bridge Troll Guild, and also near Goblin Rocks. There is almost always remnants of junk which the Goblins have stolen from the people of Daventry and surrounding lands in or near the holes.