San Blas, a tiny, rock-strewn bay with some patches of coarse, rust-coloured sand, is backed by steep, terraced fields with prickly-pear hedges. There's parking space for only a handful of cars at the beginning of the very narrow track above the bay. It's a steep walk down to it, but you can take a jeep down or up (€2.50 per person).
It's a lovely place to take a picnic lunch and a good book, and perhaps a mask and fins for snorkelling – the water is quite shallow and very clear. You can walk to San Blas from Nadur in about 30 minutes; it's just over 2.5km from town (take Triq San Blas off Triq it-Tiġrija, two blocks north of Nadur's church). Bus 304 heads here every two hours from Victoria (18 minutes), via Nadur (5 minutes).