Go in and shine the lantern around.
Travis heads into Citadel 1 and examines the entrance to the walkway.
Travis waits while Simus hops down and then the pair step back into Citadel 1 and look around. The room the walkway connects into is different from the rest, it's smoothed and molded to fit with the walkway and lacks any alcoves. It almost looks like a funnel.
"Hm... the sand level in here might rise and fall. Best be careful in case it starts rising again.
On the other hand, that would imply a lot of the structure might only be accessible when the sand is at a given level. I wonder what the rooms would be for in that case?"
Continue on, exploring as we go.
You continue down. One rotation. Two rotations, three rotations; the sound of rushing sand is getting ever closer. Finally, you stop. The ramp ahead of you is buried in the sand, but is noticeably, if slowly, being uncovered as the sand flows away. Somewhere near by you can hear something strange, a sort of thumping noise, like a piece of debris being banged and scrapped against something by the flow of the sand.
Run up the ramps, look into each room for something shiny.
You begin running up the ramp you're on, looking in each room. It's tiring work and you're not sure how far you get up in the tower before you're out of breath, but you don't find anything.
Follow the group, continue checking the rooms on our way down.
Check the sand level in my containers, dump the excess, if needed.
...Hmmm...
You check your sand containers. There is a bit more but thats not the thing that strikes you. The sand is all clustered against one side of the jar, as though it was cowering back or under the influence of a sidelong gravity. You turn the container and it it shifts to keep it's position. It seems to be cowering away from the last place you heard the worm, from the current source of the strange tones that are still ringing quietly through the citadel.