Manhole; drain manhole; sewer manhole.
In Puerto Cabello and Valencia many manholes have no covers.
Reference in Video:
References in News:
"Although quick and effective for securing the immediate threat, welding makes it much more difficult to gain access to the manhole in an emergency."
Winnipeg Free Press."The vulnerabilities have long been recognized, with the Dept. of Homeland Security in the United States issuing guidance on protecting manholes — especially when close to critical infrastructure facilities."
Winnipeg Free Press."Alexa Longueira was walking down Victory Boulevard and getting ready to text-message when she fell into an open sewer manhole. Now the city is trying to figure out why the manhole was left open and unblocked."
My Fox New York.
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