Water filtered into limestone can re-surface through springs as the Tamara spring, outside Fornazos strait. The place, as the surrounding of the Puntillo spring, downstream, is one of the most beautiful parts of Guara Park.

In this stretch in Alcanadre River the differences in sandstone, conglomerate and limestone made by fluvial modelling can be visible.

Signposting: Route to the Tamara and el Puntillo Springs