aikawa
aikogun
attractions
blue
blue sky
building
concrete gravity dam
dam
dam lake
drainage
electric
energy
facilities
gen torii lakeside gardens
green
huge kin products
hydroelectric power
hydropower
japan
kanagawa
kanagawa prefecture
kanto
lake
lake miyagase
landscape
miyagase
miyagase dam
miyagase lake
nakatsugawa
nature
outdoor
park
pond
ponds
rainbow bridge
reservoirs
sunny
surface of a lake
the kanto region
tourism
tourist destination
water
water surface