ID 261877871 © Mariokrpan72 | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
abandoned arena background black cave cavern coal construction copper corridor dark dig dirt dirty energy engineering entrance excavate explore geology gigerwald gigerwaldsee gold hard heritage historical indoor industrial industry inside interior iron lake light machinery metal mine mineral old path pedestrianroad pit railroad reservoir rock safety sardona schweiz shaft silver spooky stone switzerland tectonic tektonikarena tool tunnel tunneling tunnels underground underpass unesco unescowelterbe way work world