This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
CowburnTunnelAirshaft. Cowburn Tunnel airshaft Derbyshire Transferred from org en transferred to Commons by User Kafuffle using de php CommonsHelper br Original text own work br first version last version Dave Dunford Dave Dunford Original uploader was Dave Dunford at org en Released into the public domain by