Something fell. A sickly gloaming lit up the night like mock daylight, just for a moment, and then the hills trembled. Now, an alien entity lies brooding in a crater gouged out of the moor. Local folk are enraptured with the toothsome jelly exuded by this being, but are blind to the true nature of the events unfolding in their rustic little backwater.

Old-School Essentials Adventure A hole in an old oak tree leads characters down to a maze of twisting, root-riddled passageways, the chambers of an ancient wizard-complex, and the banks of an underground river where once a reptile cult built their temples. A classic expedition into the Mythic Underworld for characters of 1st to 2nd level. 60 keyed areas, rumour table, loot summary, dungeon background info, suggestions for expanding the dungeon. Keyed in a quick-reference, bullet point format. Unlabelled map included for VTT use. The Hole in the Oak can be linked with The Incandescent Grottoes to form a large, 3 level dungeon with over 115 keyed encounter areas!