Anns a' phrògram-sa, tha Calum aig Cuaraidh Rubislaw, teas-meadhain Obar Dheathain a tha an ìre mhath air falach. Dh'fhosgail Cuaraidh Rubislaw ann an seachd ceud deug agus ceathrad, le mu shia millean tunna de chlach-ghràine a' tighinn a-mach as a' chuaraidh le ceud 's ceathrad meatair de dhomhainneachd! Bhathas ag ràdh gur e seo an toll as motha san Roinn Eòrpa aig aon àm agus mar a thuirt Calum "neach sam bith a tah deònach snàmh sa chuaraidh air latha geamhradail, feumadh gu bheil iad cho cruaidh ris a' chlach-ghràin fhèin".

Calum explores the deep waters of Rubislaw Quarry, hidden away in the centre of Aberdeen. It opened in 1740 and about six million tons of granite have been extracted from the quarry. With a depth of 140 metres, this was said to be the largest hole in the ground in Europe and as Calum points out: "anyone jumping in the waters on a winter's day has to be as hard as granite". Show less