Rattle. A square wave at 440 Hz, originating from Mountain Pass. Recorded in a cave environment, era: 2000s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #1820 — Rattle
ID#1820
Rarity
LO:59%
Frequency
440 Hz
X-HI:7%
Wave Type
Square
X-HI:10%
Resonance
Harsh
X-HI:8%
Era
2000s
X-HI:8%
Origin
Mountain Pass