Huerva River through Vistabella Nature · Vistabella de Huerva, Campo de Cariñena, Zaragoza Stretch of the Huerva river in Vistabella de Huerva, which further downstream forms the Hoces del Huerva, a roughly twenty-kilometre canyon reaching to Tosos, hard to access and protected within the Natura 2000 network. Photo: Miguel-vb (Public domain) What to see and do in Vistabella de Huerva