Bat, Giant (GMU)
   Brogmoid (GMU)
   Christmas Tree Monster (GMU)
   Corbie, Giant (GMU)
   Cyclops (GMU)
   Dornbeast (GMU)
   Dragon (GMU)
   Glutton (GMU)
   Hangman (GMU)
   Hellhound (GMU)
   Horror (GMU)
   Hungus, Rabid (GMU)
   Jackanape (GMU)
   Ogre (GMU)
   Pterodactyl (GMU)
   Reaper Squirrel (GMU)
   Roc (GMU)
   Snow Wight (GMU)
   Yellow Grotch, Mutant (GMU)
   Yipple, Rabid (GMU)

The Lonely Mountain is a towering solitary peak to the west of Largoneth Castle. It is quite tall, and its proud summit often lies shrouded in low-hanging clouds. However, in olden days, mariners had named it Signal Mountain, for its odd glistening white peak reflected the pale moonlight, providing an unmistakable landmark on unclouded nights.

A small mountain trail leaves the peak and descends to the south into the small village of Largoneth below. The Long Road, running from the gates of the castle, curves around the base of the mountain and winds its way to the west. Low, smoky hills stretch out to the horizon to the west and south. Vegetation becomes desolate about halfway up the mountain, ending at the treeline with short, stunted trees. The bald mountain face is made of a shining substance; these peculiar rock formations scattered across Signal Mount grab the light of the full moon and throw it into the coastal valley below, clearly illuminating the impressive, soaring castle and the nearby stretch of beach. Even the water of the Great Sea beyond seems to dance excitedly in the beautifully pure light, filling the air with a compelling tingle.

In 888 GUE, following the collapse of the Great Underground Empire, Galepath temporarily secured the Lonely Mountain and its nearby villages after securing the allegiance of Lingolf Garrison.

During the Great Monster Uprising, the majestic mountain had become a landmark for both mariners and monsters alike.