Dancers at Mey Highland Games in Caithness impressed the King during his visit on Saturday.
Charles attended the games in northern Scotland despite repeated spells of heavy rain forcing visitors to seek shelter.
The King watched as athletes participated in the traditional tug o’ war and the tossing of the caber – which involves entrants carrying a long and heavy tree trunk and throwing it in an attempt to turn it end over end.
He also took in the dance competition, watching participants with games’ officials from inside a tent to protect them from the inclement weather, and he was seen smiling at young entrants in their traditional garb.
Dressed in his traditional kilt, Charles was seen greeting attendees – including a very young baby – as he continues his stay in Scotland.
Earlier this week, he battled midges at a vast expanse of peatland in Sutherland.
The Flow Country is widely considered to be the largest area of blanket bog in the world and covers about 1,500 square miles in the Highlands, and it is estimated to store about 400 million tonnes of carbon dioxide – more than is stored by all UK woodlands combined.
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