Russian photographer Mikhail Mishainik ventured 650 feet below Yekaterinburg, Russia to capture these phenomenal images of defunct salt mines. The psychedelic nature of the surfaces are made from mineral carnallite, which is commonly used as crop fertilizer. Mishainik spent over 20 hours exploring the abandoned mines where a single tunnel can stretch for over four miles. While the mines may appear beautiful, the deadly discharge of methane and hydrogen makes these tunnels highly hazardous. Enjoy the pictures above from the safety of ground level.