sentences:  The land on both sides of this causeway has been eroded away by the sea, and all that now connects Little Sark to the rest of the island is a narrow ridge a mere three metres (nine feet) wide and 90 metres (300 ft) in length, with a drop of close to 80 metres (260 ft) on either side.Until the beginning of the twentieth century, access to Little Sark was extremely difficult or, at best, unnerving.La Coupée was traversed by a narrow dirt track, and children are reputed to have had to crawl across it on their hands and knees to prevent being blown over the edge by the wind.