Uploader's Comments

Although the map (and lots of guidebooks) use the name "Carsaig Arches", in reality this is the one arch, whilst the other is far more of a cave with landward and seaward entrances. Both are formed in Tertiary basalt lava flows. Either can be entered on foot from the land side at low tide, whilst high tide (and a reasonable disregard for the integrity of your hull if there's any swell) is needed for entry by boat from the sea. The tide was fairly well in on our visit, so the arch was easy enough, and one could even have landed on the shingle beach inside. The cave was harder by boat, but easy from the shore side if you didn't mind ankle-deep rotting seaweed...