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Pine processionary caterpillars

These harmless-looking caterpillars (which turn into moths) can be very dangerous to humans and pets. When disturbed, the caterpillars shed their fine harpoon-shaped hairs, which cause itchy rashes and breathing problems. (Just sitting under a tree that contains a nest can cause a rash.) Some people can have severe allergic reactions.

The caterpillars are a big problem in Spain’s pine forests. It was once thought that they killed trees, but studies have shown they do not attack a tree after it has been weakened; they leave it to recover and start again once it’s strong enough. Danger time is normally in the spring but can be earlier in mild winters, when the caterpillars leave their nests to find suitable ground to pupate.

Electrical storms

These are a common occurrence in late spring and autumn but are rare in winter. Sufficient warning is usually posted on the AEMET website (www.aemet.es/en/).

Wildfires

Andalucía has a very high incidence of forest wildfires, especially between the beginning of May and the end of October. One particularly large wildfire in 2005 above Lanjarón destroyed over 8000 hectares of the National Park. Please exercise the utmost caution, even outside of these high risk dates.