Fold 78. A am wave at 40 Hz, originating from Subway Tunnel. Recorded in a anechoic environment, era: Pre-War. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #4631 — Fold 78
ID#4631
Rarity
LO:51%
Frequency
40 Hz
X-HI:5%
Wave Type
AM
EX:5%
Resonance
Brittle
X-HI:6%
Era
Pre-War
EX:3%
Origin
Subway Tunnel