El Caletón natural pools, in the 1706 lava

What it is

When the lava of the 1706 eruption reached the sea in front of Garachico, it cooled all at once and left a black-rock coast full of pools. Those pools, linked by walkways, stairs and the odd concrete platform, are the El Caletón natural pools: clear sea water among lava blocks, next to the San Miguel castle, in the heart of the old town. It is Garachico's swimming spot; on this stretch of coast there is no sandy beach.

When to swim

It depends on the sea, not on the calendar. When the sea is calm the pools are sheltered and the water renews itself gently; with a northern swell, the waves come over the rocks and swimming is dangerous. Look at the sea before you get in and respect any signs and closures the town council puts at the access. The water is the Atlantic's: cool even in summer, warmer from August to October.

Getting there

They are at the foot of the old town, on Avenida Tomé Cano, beside the San Miguel castle: from Plaza de la Libertad it is five minutes' walk, downhill. Park in the free public car park at the old football pitch. Without a car, TITSA bus 363 stops in Garachico on its route between Icod de los Vinos and Buenavista del Norte.

With children

The innermost pools, with a calm sea, are shallow and children like them; always watch them, because the rock is slippery and sharp. Bring water shoes. There is no natural shade, so bring a cap and sun cream.

After your swim, El Rebojo is a few steps away, near the castle, and the old town begins just behind.