Shriek 12. A am wave at 528 Hz, originating from Radio Tower. Recorded in a cave environment, era: 1970s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #1991 — Shriek 12
ID#1991
Rarity
HI:15%
Frequency
528 Hz
X-HI:6%
Wave Type
AM
EX:5%
Resonance
Dense
X-HI:6%
Era
1970s
X-HI:6%
Origin
Radio Tower