Bruce's Cave
Bruce's Cave or the Dunskellie Grotto is a relatively small and mainly artificial cave created in the red sandstone cliffs about 9 metres above the Kirtle Water at Cove, Kirkpatrick-Fleming, Dumfries and Galloway, Scotland. It has been associated with Robert the Bruce and the famous incident with the spider struggling to build its web.
Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).