The summer of sewer diving keeps on going.

Five “mole people” dove down a manhole into the Long Island drainage system in an overnight run Thursday — just one week after a seemingly separate trio emerged in NYC.

The unidentified urban spelunkers descended into the Wantagh storm drain at the intersection of Wantagh Avenue and Jerusalem Avenue at around 1 a.m., WABC reported.

The group was captured on surveillance cameras working together to get the cover open before sliding into the opening into the underground in a matter of seconds, according to video obtained by the outlet.

The men, wearing black shirts and shorts, slipped inside before…

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