I've backed the Kickstarter and was tossing around ideas I could contribute. Wow, is the Numenera community active! Huge chunks of story have come and gone. I can't keep up with it! However, as I was mulling things around, I decided something static like a location might be useful. An image started to form, and I ended up sketching a map of a fragment of the Valley of Sins, another locale that was introduced as part of the story.
After some refinements and a pass through Photoshop, I give you, "The Flute":
Scroll brought back from the Valley of Sins,
possibly stained by the mysterious "Blue Mist".
At one end of the valley of sins, whatever ancient force gouged out the valley also cut through a long-buried structure, revealing several holes in the valley walls. At one corner of the structure, a steep spiral stalagmite rises up several tens of meters and exits a hole in the roof of its chamber. On windy days, the entire structure sings a haunting note. Local children brave enough to enter even this far have discovered that, by standing in front of certain holes or placing sheets of wood or synth over them, they can change the tone. Over the years, some people have reported that, every once in a while, the hills will sing out a deep and unsettling note—eerily similar to a war horn.
An interesting side effect of the structure is that the wind will collect and deposit various bits and pieces of drit here. Glow globes, broken carts, even a bipedal automaton have been found in the collected rubbish.