Are there any precautions I should take when hiking in Mallorca areas affected by pine processionary caterpillars?

The Tramuntana mountains can be a stunning backdrop for hiking, but during spring, the pine processionary caterpillar becomes active, especially in pine forests near towns like Soller and Valldemossa. These caterpillars have tiny hairs that can irritate skin and cause allergic reactions, so it’s wise to be cautious when exploring these areas. Checking local signage or TIB bus information for any alerts about caterpillar activity on popular routes can help you plan safely.

Stick to marked paths on trails like those near Deia or the Ma-10 road to avoid disturbing nests. Wearing long sleeves and trousers offers good protection, and if you have pets with you, keep them leashed as they are particularly vulnerable to the caterpillars’ hairs. The safer bet is to hike outside the peak caterpillar season, but if you’re out during spring, early mornings or late afternoons tend to be cooler and the caterpillars less active.

Many of the island’s best hikes pass through forests with Aleppo pines, which are favored by these insects, so a little preparation goes a long way. With mindfulness about where you step and what you touch, you can still enjoy the fragrant, pine-scented air and the occasional glimpse of the Mediterranean sea from high above places like Formentor or Alcudia without worry.