These caves are about 15km southeast of Porto de Mós, and 2km and 3.5km, respectively, south of the N243 from Porto de Mós to Mira de Aire. Discovered in 1964, they are the spiky smaller cousins of Mira de Aire, with similarly disco-flavoured lighting.
Buses between Porto de Mós and Mira de Aire can drop you at the caves turn-off on the N243, but it’s a steep uphill walk from there.