Surge 72. A noise wave at 888 Hz, originating from Subway Tunnel. Recorded in a cave environment, era: 1950s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #0071 — Surge 72
ID#71
Rarity
MID:47%
Frequency
888 Hz
EX:3%
Wave Type
Noise
X-HI:6%
Resonance
Metallic
EX:5%
Era
1950s
X-HI:5%
Origin
Subway Tunnel