MAP07: Ground Beneath (1000 Line Community Project)

MAP07: Ground Beneath is the seventh map of 1000 Line Community Project. It was designed by Aquila Chrysaetos and uses the music track "Message for the Archvile" by Robert Prince.

Essentials
Take the armor and super shotgun in the starting area then flip any of the switches; the floor will lower and reveal four fenced paths with imps. Follow the west path to a wooden door and open it to find a T-junction, then turn right and head past some zombies (plus a cacodemon on Hurt Me Plenty (HMP) skill level or a Hell knight on Ultra-Violence (UV) and Nightmare (NM)) to a curved tunnel leading to a nukage pool containing a cacodemon, a rocket launcher and a pillar with a button on its south face. Press the button then return to the T-junction and head straight forward (south) to a now-open door which leads to a lava pool containing the yellow skull key.

Go back to the starting platform (it will automatically lower as you approach) and take the south path to find another door that requires the yellow key; open it, kill the waiting imps and shotgun guys then step on the teleporter behind them to enter a water pool containing the blue keycard. Taking the key will open two walls behind you revealing spectres, imps and one or two arch-viles - fight your way past the enemies to another teleporter in the south-east corner which will return you to the area behind the yellow key door, then return to the starting platform and take the north path to find a door requiring the blue key. Open the door and kill two demons waiting behind it, then follow the broken path past two imps and two knights until you reach a ledge with a mancubus (or arachnotron on UV and NM); watch out for the cacodemons that are released behind you as you step on this ledge. Go east to find a supercharge (or megasphere on HMP) then step on the teleporter behind it to enter a blood pool containing the red skull key - a cyberdemon will be released behind you when you step on the key's plinth.

Fight or avoid the cyberdemon (an invulnerability pickup can be found by the red key on I'm Too Young To Die and Hey Not Too Rough) then step into the teleporter in the south-east corner to return to the nukage pool to the west. Retrace your steps to the starting platform and use the east path to find a door requiring the red key, open it to find another arch-vile then step on the patch of sky in front of you to finish the level.

Secrets

 * 1) Lower the starting lift and run west through the false wall with pipes (if you see an electricity symbol, go back to the lift and lower it, then run west through the wall with pipes). On the other end, the caged area has shotgun shells and a medikit. If you take the platforms up to a teleporter, you can get a plasma gun and an energy cell pack. (sector 70)
 * 2) Enter the south-east teleporter, then go through the false wall south of the teleporter you pop out of to get an armor and an energy cell pack. (sector 29)

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:

Inspiration and development
This level shares some design elements with Doom II's, including the starting platform that lowers when you flip the switches, the fenced pathways around it and secret #1.