Manhole cover
REMOVABLE PLATE OVER MANHOLES, TO PREVENT THINGS FROM FALLING INTO SEWERS AND OTHER TUNNELS
Manhole Cover; Manhole cover theft; Maintenance cover; Maintenance cover theft; Sump cover; Manhole covers; Personhole cover
A manhole cover or maintenance hole cover is a removable plate forming the lid over the opening of a manhole, an opening large enough for a person to pass through that is used as an access point for an underground vault or pipe. It is designed to prevent anyone or anything from falling in, and to keep out unauthorized persons and material.