beauty in nature
blue
bright
bulgaria
clean
drinking water
environment
freedom
freshness
grass
green color
high up
hill
holiday
idyllic
lake
landscape
mountain
mountain peak
mountain sports
national landmark
nature
no people
outdoors
park man made space
people traveling
pond
purity
rila mountains
rock object
rural scene
tranquil scene
transparent
travel location
valley
vibrant color
waters edge
wilderness area