Shriek. A fm wave at 440 Hz, originating from Subway Tunnel. Recorded in a cave environment, era: 1980s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #5063 — Shriek
ID#5063
Rarity
MID:37%
Frequency
440 Hz
X-HI:7%
Wave Type
FM
EX:4%
Resonance
Soft
X-HI:8%
Era
1980s
X-HI:8%
Origin
Subway Tunnel