Dec 21, 2025
'underground shrine' flood channels beneath greater tokyo
seen from United States
seen from China
seen from Australia
seen from Peru
seen from Türkiye
seen from Colombia
seen from Netherlands
seen from Malaysia
seen from Russia
seen from China
seen from Malaysia
seen from Brazil
seen from Indonesia
seen from Malaysia
seen from Malaysia
seen from Malaysia
seen from China
seen from China
seen from Peru
seen from United States
'underground shrine' flood channels beneath greater tokyo
'underground shrine' flood channels beneath greater tokyo
Science of Firefighting: Cisterns
Ever notice a brick-lined circle embedded into a street intersection? Keep an eye out and you'll see them throughout San Francisco. As part of the San Francisco Fire Department's Auxiliary Water Supply System, these brick circles indicate a cistern full of water.
Starpath by Pro-Teq Surfacing -a UV absorbing aggregate that releases topaz light by night.