Still 01. A square wave at 528 Hz, originating from Mountain Pass. Recorded in a cathedral environment, era: 1960s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #5148 — Still 01
ID#5148
Rarity
LO:56%
Frequency
528 Hz
X-HI:6%
Wave Type
Square
X-HI:10%
Resonance
Soft
X-HI:8%
Era
1960s
X-HI:6%
Origin
Mountain Pass