alp
alps
alternative
alternative energy
arch dam
architecture
barrage
bent
big
building
canyon
cap
concrete
construction
dam
electric
electricity
emosson
energy
europe
generation
generator
glacier
high
huge
hydro
hydroelectric
hydroelectric power station
ice
lake
landmark
landscape
large
may
mountain
mountains
peak
power
reservoir
river
road
rock
rocks
snow
spring
switzerland
wall
water