The major feature of the House is the doorway which randomly appears in the east wall of the living room. The entrance leads to the Hallway known as the Endless Corridor, a passage that wildly varies in overall length. On its inital discovery it appeared to be a mere ten feet, though on the final expedition the hallway stretched on infinitely. Exploration into the corridors branching off from the main Hallway may eventually lead one to a large cavern dubbed The Great Hall. In the center of the Great Hall is the Spiral Staircase, whose diameter and length also vary greatly from expedition to expedition, at one point stretching on for a distance bypassing the circumfrence of the Earth.
Beyond these major features the internal geography has differed for each visitor. A traveller can be lost for mere moments, or days. It is believed that survival beyond that point would be impossible, as endurance is limited by how many supplies a person can carry with them.
Visitors to the House often report hearing a distant growl eminating from the Hallway, believed to be the sound of the House changing shape.
The infinite rooms that wait past the door have no windows nor decorations of any kind, and the walls are a dull ashen black. In the deepest levels of the house, analysis of their composition shows material dating back to a time before there was a solar system.
The House was supposedly built in 1720, though an expedition diary from 1610 reports finding a set of stairs several days from the Jamestown colony. The House has changed owners often since its construction, most traumatized in some way by the experience. The worst incident however, was that experience belonging to the Navidsons. Will Navidson was a photographer who hoped to spend more time with his family, and record their experiences for posterity. As a result, a large quantity of film and photographic evidence exists of the House's unusual nature. After discovering the initial discrepancy in the size of the house, Navidson brought in his brother Tom and his friend Billy Reston, who were instrumental in the exploration and documentation of the House. Eventually the explorer Holloway Roberts was invited to launch an expedition into the Hallway, taking a small team down the Spiral Staircase. Paranoia eventually infected Roberts, leading to a series of events where he injured one and killed the other of his assistants before disappearing into the darkness behind a series of slamming doors.
After this disasterous exploration, the Navidson family attempted to leave the House. The entire House begin to change shape rapidly, shifting both walls and floors in an attempt to trap the occupants. Tom Navidson was killed and his body never recovered. This incident marks the only instance where the House has made aggressive overtures towards its inhabitants.
Navidson later made his own journey into the House, heading down the Endless Corridor on a small bike. The Corridor began to slant downwards, taking Navidson further and further into depths of the House. He was eventually confronted by a sharp precipice, on the edge of which lingered a small room in which was found a ladder. Climbing the ladder took Navidson back to the familiar Hallway, where he saw a window for a brief instant. The Hallway gradually decreased in size to a box just big enough for Navidson to read a book in until his remaining light died out. At some point natural light reappeared for Navidson, and he emerged from the Hallway.
The House is still in the possession of the Navidson family, though they do not live there. The property remains boarded up, and visitors are advised to stay away.
(Mark Z. Danielewski, House of Leaves, New York, 2000)