Rumble. A triangle wave at 4096 Hz, originating from Nuclear Plant. Recorded in a cathedral environment, era: 1960s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #2819 — Rumble
ID#2819
Rarity
MID:31%
Frequency
4096 Hz
EX:3%
Wave Type
Triangle
X-HI:8%
Resonance
Brittle
X-HI:6%
Era
1960s
X-HI:6%
Origin
Nuclear Plant