Top pic is an old Tin mine,local.. bottom one was a rescue up in Staffordshire way..9 m down ,2/3 ft away from a railway track on a big bank...at the bottom we went 12/14 ft in along the tube to reach a second dog..2 of us laying on our stomachs,holding ankles...and 3 lads ready to go like f**k it it went pair shaped, everytime a train was coming ,we had to get out the hole sharpish