In the Natural Parc of Sant Llorenç, there are numerous caves, the deepest of which goes down some 120m into the washed out conglomerate rock. That cave is called "Avenc de l'Espluga", avenc being the Catalan word for vertical cave. As a matter of fact, it is the cave I've visited most times, and every time me and my caving companions went there, we passed at least one night in a cosy rock shelter close by, which bears the name "Balma de l'Espluga", Balma being Catalan for ....... rock shelter, exactly! Since I hadn't been there for years, I thought it would be nice to go there by bike.
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