Dragon's Hoard

From the Introduction

A large chamber sits at this intersection of two equally sizable corridors. In each wall gapes a massive circular portal leading deeper into the dungeon. At the center of the chamber, bathed into flickering orange light by a few torches along the walls, rest numerous piles of glittering gold coins. Some of them apparently piled head high. Upon coming closer one might realize that these treasure piles almost completely fill a more than knee deep depression in the floor as well. And a very careful observer might even realize that it looks like something tends to move along these riches on a regular basis.