Thick Sigh. A granular wave born in Subway Tunnel, resonating since 1950s. Captured at 528 Hz in a cave space. One of 350 Legendary echoes — sounds that almost escaped recording.
Name
ECHO #1272 — Thick Sigh
ID#1272
Rarity
MID:41%
Frequency
528 Hz
X-HI:6%
Wave Type
Granular
EX:3%
Resonance
Soft
X-HI:8%
Era
1950s
X-HI:5%
Origin
Subway Tunnel