aldeadavila
arribes
arribes del duero
barrier
beautiful
canyon
castile
cliff
dam
douro
duero
edge
electric
electrical
engineering
environment
europe
geology
hydro
landmark
landscape
leon
meander
mountain
natural
nature
outdoors
outside
park
plant
portugal
renewable
reservoir
river
riverbed
riverside
rock
rocks
rocky
salamanca
scenic
spain
stone
technology
turbine
valley
view
wall
water
wild