Rift 57. A sine wave at 142 Hz, originating from Subway Tunnel. Recorded in a corridor environment, era: 2010s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #5006 — Rift 57
ID#5006
Rarity
LO:74%
Frequency
142 Hz
X-HI:9%
Wave Type
Sine
X-HI:13%
Resonance
Warm
X-HI:11%
Era
2010s
X-HI:7%
Origin
Subway Tunnel