....Sit on the edge of the cliff.
Unfortunately, in some areas, they have to collect the dead bodies of tourists throughout the summer. Here we have soft yellow rock, like limestone. The waves scoop out a hollow at the bottom and eventually the top crumbles and falls down. It falls down a lot faster if there is the weight of someone on it. The cliffs aren’t high here, but if they collapse with you on them you will be injured enough to ruin your holiday.
We do have barriers but they are made of wood. As it is very damp in winter and hot in summer they don’t last long. A gap in the barrier doesn’t mean ‘you can sit here’.