@geoadventurer91: Corrieshalloch Gorge is a steep sided valley carved out by a waterfall. These tend to form in the upper course of a river and are eroded through the process' of hydraulic action, abrasion and solution. Listen to find out more 🤗 #corrishallochgorge #gorge #waterfall #river #uppercourse #erosion #nwhighlands #ullapool #Scotland #geography #sqageography