E1M9: Nightstone Hollow (Realm of Parthoris)

E1M9: Nightstone Hollow is the ninth and secret map of Realm of Parthoris. It was designed by James Caldwell (Obsidian) and uses the music track "Plasma," composed for Duke Nukem 3D by Lee Jackson.

Secrets

 * 1) At the start, head to the southwest and use the switch, which will reveal one behind you. Head onto the rocks to the northeast, then turn southwest and shoot that switch. Now go through the cave to the south and east and press the next switch. Go back to the rocks and go east towards the mural. A switch is on the north wall, which will lower the mural and reveal a Mystic Urn. (sector 56)
 * 2) At the northern part of the map with two platforms, there is a switch near two platforms on the southwest side. This switch raises some steps on the ledge above, as well as removing the stained glass so you can go out to the cave. Go over there to get an Enchanted Shield. (sector 557)

Current records
The records for the map at the Doomed Speed Demos Archive are:

Things
This level contains the following numbers of things per skill level: