Field guide No. 1626
Sound quarry
Dug to the shape of a horn
A pale limestone quarry whose walls curve down into a deep round funnel, like the bell of a horn laid in the ground. Whatever is meant to speak into it has not arrived.
Field noteQuarried limestone flares into a horn bell, as if the pit were cut to be listened into.
Also possible, also breaking scale
Cratered moon wedged between balconiesMoons are big enough to light a hemisphere. This one is small enough to jam between two balconies, and has.
Brass trumpet, endless black absenceTrumpet bell feeds a drainpipe-thick black tube that runs off down the platform.
Shuttle serviceObservation towers come in all shapes. Feathers would need replacing after every gust.
One last dropWater drops already hold tiny pictures by refraction. A glass inside one is only a little ambitious.