Tourists stranded on Reykjavik islet when observing Northern Lights

The Reykjavik Metropolitan Police received notification last night about a group of tourists who had become stuck in Grótta in Seltjarnarnes, West Reykjavik. Grótta can be accessed by foot at low tide but at high tide it's only accessible by boat (or a cold swim). 

The tourists were observing Northern Lights and didn't realise that the tide would come in. A rescue team was dispatched and ferried the people back to land. 

The islet of Grótta features a lighthouse and it's a popular spot for viewing the surrounding bay and mountainrange, but people should take of the changing tides. A tide information sign can be found at the shoreline.