There is no real definition stating how tall a mountain must be before it is a real mountain and not just a major hill. Still we do make distinctions between mountains and hills.

The tallest mountains in the world are to be found in the Himalaya range, including the tallest mountain of them all, Mount Everest of some 9000 metres.

Other famous mountains include Fujiyama in Japan, Kilimanjaro in Tanzania and the Matterhorn of the alps, between Switzerland and Italy.

Keynote speakers on mountains might choose a geographical focus, a geological approach, an historical or cultural ditto. Or perhaps include tales of mountaineering.