A police operation has unfolded in Sydney's south west with one man shot after officers efforts to stop the man with a Taser and non-lethal rounds were ineffective.

Police have shot a man who allegedly lunged at them with a knife during a siege in a caravan park in southwestern Sydney.

When you go off-road with a caravan, safety should always come first. Respect nature, follow all local rules and laws, and stay on marked trails. Bring extra water, a first-aid kit, and enough gas for ...