aerial
aerial view
balkans
bulgaria
canyon
cascade
dam
devin
engineering
environment
europe
forest
geological
gorge
hill
hydro
hydroelectricity
krichim
krichim reservoir
landmark
landscape
leisure
meadow
meander
mountain
natural
nature
panorama
peninsula
plovdiv region
power
reservoir
rhodope
rhodopes
river
rodopi
scenery
scenics
sight
sightseeing
summer
tourism
travel
vacha
vacha river
view
water
wilderness