You bring in the rafts from the main river into the alcove area, as shown below:
You row the rafts into the area marked W1 and get a much better view of the area.
You can moor the rafts at any of the places marked "a", "b", or the center landing area between them. Areas "a" and "b" both have empty rafts. (Yes, this means there is yet another raft you have not seen before.)
Alternatively, you can row the raft up north to the area marked W3 if you don't want to moor the rafts.
This W1 area is very large and domed, with 20 foot tall ceilings. As with the rest of the lava tunnels, the walls are very porous, with large 6 inch to 2 foot wide round holes leading out scattered all around the walls and ceiling. These partly drain out the heat from the lava to avoid it becoming unbearably hot...but it is still very, very hot. You find yourselves drinking extra water and wiping away sweat constantly.
In the center of the area is a 10 foot wide round stone table-like object. It appears too smooth to be natural and the outsides are rounded as though to make grips. Rocks leading northwest block off your ability to move the rafts around clockwise. You would have to row back and forth. In a pinch, you could theoretically use the rocks as stepping stones, though it would be risky.
Tunnels lead away from each of the mooring sites.
This message was last edited by the GM at 01:59, Wed 23 Sept 2020.