The holm oak is typical of the Mediterranean climate and does not grow in many places in the Principality, so this wood is rather interesting. Among the branches of the holm oaks, various kinds of tits flit: the great tit, coal tit, blue tit and even the long-tailed tit, which usually forms small, restless bands. The blackbird and jay are other kinds of birds living in the holm oak woods, warning others of potential intruders into the woods. On the last section of the trail, the holm oaks are replaced by downy oaks. Just at the end of the route, where El Serrat path and El Serrat Blanc path meet, a majestic birch with four branches stands. Here also grows wormwood, a very pungent plant. Downriver, you get to Serradells swimming pool, the start of La Costa path and the Obac irrigation channel.