Knell 31. A noise wave at 142 Hz, originating from Subway Tunnel. Recorded in a container environment, era: 1960s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #4980 — Knell 31
ID#4980
Rarity
LO:70%
Frequency
142 Hz
X-HI:9%
Wave Type
Noise
X-HI:6%
Resonance
Harsh
X-HI:8%
Era
1960s
X-HI:6%
Origin
Subway Tunnel