Yogo mine map

Mike Roberts(owner) at entrance

Mine Entrance

Mike Roberts in the mine

Driving down the decline tunnel

Deep inside Yogo Mine

limestone host rock

limestone cave formation

Hydrothermally altered sapphire dike

Hydrothermally altered sapphire dike

Yogo mine side tunnel

Sapphire dike intrusion

Hydrothermally altered sapphire dike

Partially altered sapphire dike

Mined Out Sapphire dike

Original entrance climbing shaft

Side tunnel for cuurent mining