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Guard dog on duty - vector. German shepherd dog on guard warning sign.
Pedestrian and cycle zone sign in Cornwall, UK
Pedestrian and children school zone yellow warning sign caution road sign
Radiation hazard warning sign in front of abandoned, ruined buildings in a contaminated danger zone. - Nuclear safety. Radiation warning. Disaster area.
Natural scene of boilng blue pond geyser basin with white smoke inside dangerous hot zone in Yellowstone national park, Wyoming, USA.
Anti-personnel landmine visible on the ground in a burned field, marked with wooden stakes by humanitarian demining teams in Ukraine. The marked perimeter indicates a dangerous explosive hazard area awaiting clearance by explosive ordnance disposal specialists. The image illustrates the real danger of landmines remaining in former conflict zones and the careful marking procedures used to prevent civilian casualties. This photograph documents the process of identifying and marking explosive hazards before removal and disposal

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