Description:
1st cavern. The entrance/ waterfall is really about 120ft across. So it’s not proper scale on our map. The cavern is about 60ft deep, widening initially and then narrowing to about 60 ft across where it creates the entrance into the second cavern. The ceiling is a good 60ft high or more in places. In the center of the cavern there is a sigil which is about 20 ft in diameter (which you’ve already discovered creates a globe of lesser invulnerability effect throughout the entire cavern). The floor is worn smooth and is moist but not to slippery except nearest the waterfall. Balance checks would be required for hasty movements within 10 ft. of the falls (DC 10 balance check for full movement failure means half speed) . Low light conditions are in effect here. The walls are natural stone. You would surmise that the area inside would make flight possible for even a huge dragon.
2nd cavern: This cavern has the feeling of enormity. As Tymora approached she could feel an immense cold emanating from that cavern. From everyone’s current vantage point excepting Detricks. You can see that the cavern is dark excepting the first 15ft where there is dim light and a deep blue light radiates from deep in the cavern making it possible to see the last 40 ft or so around the light but nothing in-between. The source of the light is a staff or rod that looks like it is wedged into ice. It stands upright and there is a small blue orb at the top of the rod that emits the light. You can tell that it stands near a wall of the cavern and it also partially illuminates what looks to be a small pile of coins at the edge of the light. Tymora can tell that the 1st 15ft or so that she can see on the floor and walls is a sheet of ice those with dark vision can see that the ice conditions exists for the range of your vision (60ft). (from experience you know definitely slippery. Translation DC 10 balance check to move half speed. Failure means you can’t move, failure by 5 or more means you fall prone.) You hear nothing but the rushing of the waterfall. Which makes it so you have to yell to be heard. (translation -10 to listen checks) You estimate that the staff is about 500ft to 600ft deep in the cavern.
Ty also notices that there are shards of ice broken and scattered all over the place in the second cavern at least as far as she can see.