The Tomb of Horrors

The Tomb of Horrors is hidden within a low, flat-topped hill sequestered in the heart of a great swamp (canonically in the world of Greyhawk but it's flexible in this case). The vegetation atop it is sparse and always seems withered, mostly composed of weeds and thorny brambles. Atop the hill are an array of large stones which, from height, resemble a grinning skull.

The northern face of the hill features an overhang of stone, beneath which is either a slope of gravelly debris or the exposed entrances to the Tomb. This cliff resembles the upper portion of a human skull, with the eye holes and nasal cavity acting as entrances. The path leading to the central entrance slopes downward to make this lower opening accessible.

The left eye's tunnel proceeds 60 ft, and appears to be a well-worked, properly squared stone passage with a 10ft ceiling. The walls are engraved with elaborate geometric engravings, some of which form the impression, though not image, of humanoid figures... or perhaps sarcophagi. The etchings are precise and clean, the work of a master mason at the peak of their craft. The floor is composed of 10ft by 10ft, evenly cut and fitted slabs of four different types of stone, creating an elegant, alternating pattern which would be at home in the floor of the palace of a wealthy noble. At the end, faintly visible, is a pair of fine wooden single doors framed in even more exquisitely detailed masonry. A triangular peak rises above each, with a skull at the center of each triangle. The doors look to be of excellent quality, and it looks like there might be an inscription above them, but it's hard to tell through the darkness without going in to inspect them more closely.

The right eye leads to a rough-hewn tunnel, only about 30ft in depth but boasting a soaring 20ft ceiling. The worn cobbled floor bears a scattering of loose stone and debris, but is at least smooth enough to be good for walking or moving carts in and out. The walls show signs of water-wear and chipping and, again, are roughly enough excavated and formed to make the hall look mostly square at best, more like a simple mineshaft than a proper construction, save for its impressive height. The ceiling is so thick with cobwebs that it can barely be seen at all, even with good lighting. At the end of the corridor is a simple but sturdy double door made of oak and held up by heavy, lightly stylized iron hinges. The doorway looks like it would have to be a good 10ft wide and 15ft tall, and the doors are opened by enormous iron pull rings that hang from about 5ft above the floor.

The hole of the nose extends beyond where the light reaches, but what can be seen is brightly coloured and striking. The floor is a beautiful and elaborate abstract mosaic featuring a distinct winding path about 2ft wide proceeding along its length. The 20ft walls are covered in vibrant fresco which depict numerous scenes. Those along the left wall seem to be outdoors. The first 60ft featuring, in order, grazing, emaciated cattle (30ft long), wolves devouring a corpse under a full moon (10ft long), and shackled humanoids (some with the heads or other body parts of animals) performing labor(20ft long). The images on the right wall are indoors, and, for the first 60ft, in order, show a library full of tomes and scrolls (20ft long), a wizard's laboratory with a pair of jackal-headed humanoids carrying in a chest (10ft long), and an elaborate torture chamber (30ft long)

To see anything more, one must proceed into the darkness....