PIC BY MIKHAIL MISHAINIK / CATERS NEWS – (PICTURED The psychadelic walls inside the abandoned salt mine in Yekaterinburg, Russia) These psychedelic photographs give a rare glimpse inside the walls of an abandoned salt mine. After years of mining deep into the Earths crust, layers of a carnallite now line the tunnels with a spectacular mix of coloured rock. Used in the process of plant fertilisation, the mineral can appear in a variety of colours including white, red, yellow and blue. Although a small part of the mine is still in use, miles of tunnels now lay abandoned & are only accessible with a special government permit. SEE CATERS COPY **NOT FOR SALE / USE IN RUSSIA / POLAND**