希望のコンセプト
armed forces
back lit
backgrounds
barbed hook
barbed wire
beard
boundary
business finance and industry
cable
cage
cattle
chain
closed
closeup
cloud sky
cloudscape
concentration
construction barrier
construction frame
construction industry
danger
enclosure
fence
forbidden
frame
geographical border
grass
hook
horizontal
international border
iron metal
light at the end of the tunnel
link
metal
military
old
outdoors
prison
protection
safety
security
security system
silhouette
sky
symbol
tree
war
wire