Baja Bocarones

A 15-minute boat ride east of La Restinga ends at two volcanic towers with walls so precisely vertical that the Spanish describe them as an obelisk that looks shaped by human hands. The smaller tower peaks at seven to eight metres; the larger — the main objective — tops out at 12m and rises roughly 30m from a sandy seabed. Cross the sandy flat with flanking stone reefs to reach it, then work the vertical walls down to the tower base at 25m on the north face, where the rock opens into cavities and tunnels. Schools of sargo circle at mid-depth. Large groupers hold position lower on the wall. Spiny lobsters and moray eels fill the crevices. The sandy platform at the base extends south toward 50m, where rays glide over pale volcanic sand and angel sharks rest in winter months.

The El Hierro diving community gave this site the nickname "el Rocón Monstruoso" — the monstrous great rock. It fits. Most pinnacle dives offer geology with marine life on top. Here the geometry itself is the spectacle: vertical walls on all sides, no gradual slope, a column of rock that reads as solid until you find the tunnels and holes cut through it. The outside-reserve position matters. No buoy booking, no 12-diver limit, and no permit. Weather keeps the groups small naturally. When the conditions line up, you get that site to yourself or close to it.

This dive does not happen on schedule. East coast trade winds can shut it down for several consecutive days, and any trip to El Hierro should include inside-reserve backup options. Centres make the call based on sea state on the morning — respect cancellations, as conditions on the surface can look marginal while being genuinely unsafe at depth. In December through March, mention to your guide that you want to check the sandy base for angel sharks; they know where the animals rest and a direct approach saves time. The south face of the main tower drops past 50m in clear Atlantic water. The visibility makes depth easy to underestimate. Set a depth alarm if your computer has one.