Professor Colin Ballantyne will explore the climate changes of the last ice age and the effects of glaciation on Scotland's scenery. As recently as 25,000 years ago, Scotland was completely buried by an ice sheet over a kilometre thick, the last of a succession of ice sheets and glaciers that have sculpted the landscape into its present form over the last 2.5 million years.
£11.50; holders of Tiso Outdoor Experience Card £9.50 (inc £1.50 booking fee per ticket)
FREE to RSGS members, students and under 18s
Book tickets here