Article Nº 3198 Stream, valley or inland water Porto Moniz Vol. III · p. 366
Ribeira do Tristão
A stream rising on the Pico da Pedreira, fed by the Calvário brook and the Agriões and Lages rivulets.
It has the same source as the preceding stream, and its tributaries are the Calvário (‘Calvary’) brook and the rivulets of Agriões and Lages.