rockfall2a.wav by AlanCat, published 2017-04-24.
Source: https://freesound.org/people/AlanCat/sounds/389303/
License: CC0 1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/
Acquired public high-quality preview: https://cdn.freesound.org/previews/389/389303_5486695-hq.mp3
Processed: mono, excerpts, mild speed changes, filtering, fades and gain.
thud0..3 and roar0..1: original procedural effects generated by tools/prepare_centipede_audio.py.
