Smoke signal

Cloud - Sky Day Flying Low Angle View No People Outdoors S.O.S. Sky Smoke - Physical Structure Smoke Signal
These structures in Mount Namsan are restored medieval Smoke Signal Beacons (from the joseon dynasty) which were used (until 1985) to send Emergency Signals. Smoke Signal Station Seoul South Korea Travel Photography Streetphotography Mongmyeoksan Bongsudae
S.O.S Signal Cloud - Sky Day Flying Low Angle View Mid-air Motion No People Outdoors Sky Smoke Signal Smoke Trail
safety of life at sea Life Ring Life Buoy Construction Barge Beacon Smoke Signal Safety Emergency Red Blue Platform Construction Barge Wave Ocean Nautical Maritime Production Upstream Water Sea Safety Protection Sky Horizon Over Water Close-up Buoy Boat