Rift 48. A sine wave at 142 Hz, originating from Subway Tunnel. Recorded in a open air environment, era: 1990s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #4799 — Rift 48
ID#4799
Rarity
LO:55%
Frequency
142 Hz
X-HI:9%
Wave Type
Sine
X-HI:13%
Resonance
Crystalline
X-HI:5%
Era
1990s
X-HI:9%
Origin
Subway Tunnel