Groan 85. A sine wave at 220 Hz, originating from Mountain Pass. Recorded in a chamber environment, era: 2010s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #3549 — Groan 85
ID#3549
Rarity
X-LO:76%
Frequency
220 Hz
X-HI:8%
Wave Type
Sine
X-HI:13%
Resonance
Soft
X-HI:8%
Era
2010s
X-HI:7%
Origin
Mountain Pass