One of the pictures makes it clear that there's actually a railing on the floor below, out far enough to catch anyone who slips over but down far enough to be invisible unless looked for from the pool. I've been in a vanishing edge pool (with nowhere near that kind of drop, and the edge is actually very cleverly constructed, with more structural support behind what looks like a single metal panel than is apparent above the water's surface.
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Date: 2 September 2013 06:46 pm (UTC)---L.