Inside your head...

cement collapse: ashrafcrew.deviantart.com/art/…
rubble: cgartiste.deviantart.com/art/R…
eagles: roys-art.deviantart.com/art/Ea…
birds 1: peroni68.deviantart.com/art/cr…
birds 2 : maky-orel.deviantart.com/art/P…
birds 3: roys-art.deviantart.com/art/Cr…
bg: leeorr-stock.deviantart.com/ar…
dark sky: fallowpenstock.deviantart.com/…
crater floor: castock.deviantart.com/art/Cra…
octopus: roys-art.deviantart.com/art/Gi…
rocks: lucieg-stock.deviantart.com/ar…
cracked brushes: wyckedbrush.deviantart.com/art…
cracked texture : grungetextures.deviantart.com/…