The Coves dels Hams are old almost beyond reckoning — more than ten million years in the making, carved when rainwater seeped through the limestone of eastern Mallorca and dissolved the rock grain by grain. In most caves the result is predictable: water falls, minerals settle, and stalactites grow downward in slender points. Here, in at least one gallery, something went strangely awry. The formations twist and curve into the shapes that gave the caves their name, hooking outward in apparent defiance of gravity's plain instruction. The reason remains an open question, one of those small mysteries that geology has not yet closed. Whatever the cause, the effect is unmistakable: a thicket of pale stone hooks, frozen mid-reach, suspended in the still and lightless air.

Deep inside lies water so still it doubles the ceiling above it — an underground lake the caves' keepers named the Sea of Venice. On summer evenings it becomes a stage. Musicians push off in a small rowboat, its railings lined with candle flames, and glide across the black mirror while the music of Mozart rises through the chambers and a light show plays over the formations overhead. The 'Magical Mozart' concert has become the signature of a visit here: sound, flame, and reflected light moving together in a space that spent ten million years in perfect silence and total darkness. For a few minutes, the cave is neither silent nor dark, and then the boat glides back and it is both again.

The caves owe their modern life to a single family. Pedro Caldentey opened them to the light in the spring of 1905; his son Lorenzo, a certified diver, later strung the chambers with electric lighting and shaped them into a place fit for performances and visitors. Today multilingual guides lead groups on a walk of roughly five hundred meters through twelve distinct chambers, each with its own character, before the boats appear on the Sea of Venice. In the crowded summer months the tour groups come steadily, threading the same passages that Caldentey once crawled through by lamplight — seeing at the flick of a switch what he had to piece together in the dark, chamber by chamber, with no promise of what lay ahead.

The Hams do not stand alone. This corner of eastern Mallorca, wrapped around the coastal town of Porto Cristo and the inland town of Manacor, is riddled with hollow limestone, and close by lies the larger and more famous Coves del Drach — the Cavern of the Dragon, with its own vast underground lake. Together they draw crowds inland from the beaches, offering a cool, echoing counterpoint to the Mediterranean glare above. It is an old rhythm on this coast: the bright, dry world of vineyards and resorts on the surface, and beneath it a slower, darker one, where water has been patiently sculpting stone since long before anyone thought to carry a light down into it.

There is something fitting in the name. The people of Mallorca speak Mallorquí, a dialect of Catalan shaped by centuries of life between the mountains and the water, and hams is a working word — the fishhooks and harpoons of men who made their living from the sea. That a cave full of curling stone should borrow its name from a fisherman's tackle says much about how the islanders saw their world: the strange made familiar, the underground christened for the surface. The formations themselves remain a scientific puzzle, but the name that suits them was never in any doubt.