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A very steep slope of the sewer to another level.
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The storm drain falls into an even greater pipe.
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Every 100m, a spiral staircase can reach the surface.
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A waterfall in the storm drain.
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The main entrance of the storm drain of Fresnes.
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An access by ladders to the storm drain of Fresnes.
AQUATIC ARCH AXA BATTERY BIG BILLANCOURT BLOCK BOUGIVAL BOULOGNE BRIDGE BRITANNY BUILDING BUNKER BUTTRESS CASTLE CATACOMBS CATHEDRAL CB31 CENTER CHALK CHARTRES CHURCH CIMENTERIE CLINIC CONFLANS CORRIDOR COUTANCES CRANE CRUDE DEFENSE DENFERT DOME DOOR DRAWING ESSERENT ETIENNE FACTORY FACULTY FLYER FLYING FORT FRANCE FRONT GALLERY GLASSROOF GRS GYPSUM HERBLAY HONORINE HOUSE INDUSTRIAL ISLAND JAGUAR LADER LADY LEU LIMESTONE LYON MAGINOT MAHON MAP MARLY MEDICAL MEDIEVAL MERY MEUDON MILITARY MINE MINISTRY MONTALETS MONTESSON MONTROUGE MONUMENT MUSEUM MUSHROOM OCHRE OFFICIAL OISE OPERA ORANGIS ORSAY OSSUARY OUR PALACE PALAISEAU PANORAMICAL PAPERMAKING PARIS PAUL PENITENTIARY PILLAR POINT POND PONTOISE PORT PROVENCE QUARRY RAIL RAILING RENAULT RIS ROCHEREAU ROOFTOPS ROOM ROUDOUDOU SAINT SCHOOL SEGUIN SEINE SITE SOUTH STAIRS STATION STATUE STORE SWIMMING TECHNICAL THEATER TOWER TRIEL TROCADERO TUNNEL ULIS UNDERGROUND UNIVERSITY VARIOUS VAUX WAGON WALL WASTELAND WATER WELL