Thud 83. A triangle wave at 142 Hz, originating from Subway Tunnel. Recorded in a cave environment, era: 2000s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #2161 — Thud 83
ID#2161
Rarity
LO:64%
Frequency
142 Hz
X-HI:9%
Wave Type
Triangle
X-HI:8%
Resonance
Warm
X-HI:11%
Era
2000s
X-HI:8%
Origin
Subway Tunnel