Old Town Hall is located north-west of the burning village found after the large stone brick wall in Pumpkin Pastures. It is inside a large abandoned building with grass growing on its roof, with this building presumably being the abandoned town hall of Pumpkin Pastures after it was taken over by the Savage Eye. Old Town Hall itself contains lots of furniture like tables, chairs, barrels, cupboards, and bookshelves. At the back of the area there are one to two gates that will be lowered upon defeating enough mobs. Upon defeating two endermen in an ambush, a button can be reached that, if pressed, will open the entrance door to Shelter Tunnel. Shelter Tunnel contains a long tunnel leading to an arena that contains an endersent. If the eye of ender has not been collected yet, this endersent will be the Savage Eye instead.
In the game files, Old Town Hall is referred to in the lovika levels file for Nether Fortress by the following name: OLD TOWN HALL
In the game files, Old Town Hall uses the following objectgroup IDs in the following order: ppe_es_othall_entrance, ppe_section_d001_alt, ppe_es_sidepath_01, ppe_es_sidepath_02, oldtownhall_chunk_01, oldtownhall_chunk_02, oldtownhall_chunk_03, oldtownhall_chunk_04, oldtownhall_chunk_05, oldtownhall_entrance, oldtownhall_sidepath_01, oldtownhall_sidepath_02, oldtownhall_sidepath_04, oldtownhall_sidepath_03, oldtownhall_sidepath_05, oldtownhall_deadend_01, oldtownhall_deadend_02, oldtownhall_deadend_03, oldtownhall_deadend_04, oldtownhall_deadend_05, oldtownhall_middle, oldtownhall_lift, & oldtownhall_lift_alt
In the game files, Shelter Tunnel is referred to in the lovika levels file for Nether Fortress by the following ID: shelter_tunnel
In the game files, Shelter Tunnel uses the following objectgroup IDs in the following order: oldtownhall_under_lift, oldtownhall_tunnel_01, oldtownhall_tunnel_02, oldtownhall_tunnel_03, oldtownhall_shelter, & oldtownhall_shelter_alt
While Old Town Hall uses the song Stuga, Shelter Tunnel uses the song Crypt.
The song used when fighting the endersent in Shelter Tunnel is arena1, rather than Enderman which is the usual song that plays when fighting an endersent.
↑"Minecraft Dungeons Patch Notes" (§ 1.10.3.0 - August 11, 2021) (Archive) by Mojang Studios – Minecraft Help Center, August 11, 2021. "Arrows no longer flicker when stuck in walls of the Old Town Hall on Pumpkin Pastures"