MAP29: Underhalls (The Long Trek Back Home)

MAP29: Underhalls is the twenty-ninth map of The Long Trek Back Home. It was designed by hervoheebo, based on MAP02: Underhalls from Doom II by American McGee, and uses an edited version of the original music track "The Healer Stalks" by Robert Prince, distinct from the ones used on MAP14: Tenements and MAP20: Circle of Death.

Secrets

 * 1) Head into the lava and go all the way to the northwest end. Enter a cave on the other side of the rock to find stimpacks, then go through the inverted cross to teleport to the west side with shotgun shells, a box of shotgun shells, a berserk pack, and a chainsaw. (sector 579)
 * 2) Jump east from the end of Secret #1 to the ledge below, then head east, then north across the bridge, using the switch there, then south, jumping through a window. Drop down south to some water and head west to get boxes of ammo. (sector 158)
 * 3) Head east from Secret #2 and take the lift up. Head south, then west, dropping down to a berserk pack. (sector 200)
 * 4) Head south of the southernmost bridge in the outer lava area to two rocks. Between them, you can get a megasphere. (sector 621)
 * 5) Head east from the previous secret, then northeast. At the next big rock to the north, enter it from the east side to get an invulnerability and some ammo. (sector 612)
 * 6) In the outer lava areas, head to the northeast rocks and find an open cave at the northeast side of the rock. Lower the lift to get an invulnerability. (sector 103)
 * 7) Head to the bridges south of the main area. In the rock connecting both of them, press the switch there, then return to Secret #2 to get the BFG9000. (sector 159)
 * 8) Head to a rock northeast of the main area and enter the rock from the north side. Take the lift up, take the teleporter, and re-enter the teleporter. Drop to the southeast to get a soul sphere. (sector 569)
 * 9) Open the blue door at the northwest end of the main area. Go up the south step and head west and south to a switch. Go back through the blue door, head south, then east up some steps to lower a lift across from you. This leads to a radiation suit. (sector 411)
 * 10) At the red key, lower the east wall and drop down to an invulnerability. (sector 606)
 * 11) Jump east of Secret #10 to get health and armor bonuses. (sector 3)

Current records
The records for the map at the Doom Speed Demo Archive are:

The (absence of) data was last verified in its entirety on November 4, 2022.

Player spawns
This level contains ten spawn points:
 * 1) facing west. (thing 823)
 * 2) facing east. (thing 825)
 * 3) facing east. (thing 826)
 * 4) facing west. (thing 827)
 * 5) facing north. (thing 829)
 * 6) facing south. (thing 831)
 * 7) facing north-west. (thing 832)
 * 8) facing south-west. (thing 833)
 * 9) facing west. (thing 834)
 * 10) facing north. (thing 836)

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