Old Rattle. A wavelet wave born in Subway Tunnel, resonating since 1960s. Captured at 19683 Hz in a cave space. One of 350 Legendary echoes — sounds that almost escaped recording.
Name
ECHO #3555 — Old Rattle
ID#3555
Rarity
X-HI:9%
Frequency
19683 Hz
EX:1%
Wave Type
Wavelet
EX:3%
Resonance
Crystalline
X-HI:5%
Era
1960s
X-HI:6%
Origin
Subway Tunnel