Sully Island

For two hours a day a narrow causeway allows intrepid explorers and fishermen alike to cross over to this island from the mainland. But be warned — do so at your peril!
People have died trying to cross the causeway whilst the tide was turning. The alternative is to stay on the island and wait and freeze or dial for help — not as bad as death, but still rather embarrassing. It is worth noting that the coastguards do not appreciate saving marooned tourists and you will get very told off.
For such a small island, it has a very rich history — smugglers hid treasure here and the Saxons left a fort on the south-​eastern headland. I’ve popped over to the island a couple of times to enjoy the windswept beauty, but have checked the tides and kept an eye on my watch.
Sully island is situated between Penarth and Barry, oppersite the Captain’s Wife.