reading the signal…
Signals / Object / Street-level imagery
in Sydney, NSW·counted·25 all time
Caves are natural underground spaces with dark entrances, rock walls, chambers, and sometimes stalactites.
Counted, not streamed: Caves has no time series, so it is read as a footprint across places. All-time count by city.
Things that physically exist: street furniture, signs, buildings. All-time counts.