Crest. A wavelet wave at 20 Hz, originating from Subway Tunnel. Recorded in a vacuum environment, era: 1970s. One of 5555 echoes — sounds no one thought to save.
Name
ECHO #4940 — Crest
ID#4940
Rarity
HI:22%
Frequency
20 Hz
EX:4%
Wave Type
Wavelet
EX:3%
Resonance
Hollow
X-HI:5%
Era
1970s
X-HI:6%
Origin
Subway Tunnel