Shard 25. A noise wave at 528 Hz, originating from Subway Tunnel. Recorded in a anechoic environment, era: 2000s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #3489 — Shard 25
ID#3489
Rarity
LO:73%
Frequency
528 Hz
X-HI:6%
Wave Type
Noise
X-HI:6%
Resonance
Cold
X-HI:10%
Era
2000s
X-HI:8%
Origin
Subway Tunnel