Black Fort, Inis Mór, Aran Islands, Co. GalwayMy sister and I were on Inis Mr for fieldwork, surveying boulder ridges along the exposed Atlantic coasts of all three Aran Islands. Proper research, not a photography trip. But I had the drone with me, and the Black Fort demanded it. We'd had heavy rain most of that afternoon. The limestone had gone dark and slick, everything saturated. Then the cloud broke apart from the west and a band of warm, low light caught the cliff faces. A rainbow appeared