Tunnels, and entrance piece, and accessories (like torches) to create your own medieval mesh PBR dungeons, jails, castle, etc tunnels.
The [FYI] PBR Medieval Prison kits all are texture matched. With PBR, there are no longer baked lights in that version, making them much easier to match.
This Dungeon, Jail, Medieval Tunnel Builder's Kit only includes the tunnels, it doesn't not include rooms.
A legacy baked version is also included if you do not like PBR. Use the legacy version to disable PBR in all viewers. Use the PBR version to enable PBR for PBR enabled viewers and to fall back to the baked version for non-PBR viewers.
Medieval dungeon tunnel pieces are 5-15 land impact each.