Dark Thrum. A square wave born in Nuclear Plant, resonating since 1940s. Captured at 220 Hz in a cave space. One of 350 Legendary echoes — sounds that almost escaped recording.
Name
ECHO #1123 — Dark Thrum
ID#1123
Rarity
X-HI:13%
Frequency
220 Hz
X-HI:8%
Wave Type
Square
X-HI:10%
Resonance
Crystalline
X-HI:5%
Era
1940s
EX:4%
Origin
Nuclear Plant