The node can be re-visited, however, player cannot revisit the room below. The door to the room below is tied to the first visited instance only. Regenerate the node instance will wipe the access of the room.
Room below the surface level
The room below the node is actually known as City Chambers according to the text of the door switch. However, the text on the stair that actually "portal" you downstairs is known as Vaal Ruined Chamber.
The room is also similar to Primeval Chamber Delve nodes. The room has light pads that need to be stood on for a few seconds to clear the monsters.
The loot containers of this area is known as:
- Abandoned Armour: contains body armour, helmet, gloves, boots and shields, sometimes armour-related divination cards
- Abandoned Jewels: contains jewel, and sometimes unique weapon
- Abandoned Jewellery: contains jewellery
- Traveller's Armour: contains armour, probably at least one identified item with the #% increased Movement Speed mod