Various
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There are 2658 manhole covers that belong to category Unknown:       Show on map List mode

Vienna - EGW - rectangular Hershey, PA - Hershey’s Chocolate World Cambridge - small cover with a background of large rhombuses Dumont, NJ - A lid belonging to the adjacent county Vienna - square lid with a background of rhombuses (4) London - Diagonal - Brickhouse London -  Cover with a background made of the letters ID Cambridge - Eye inspection cover London - NIF - Diagonal (2) London - cover with a background with the letters E ID Hakodate - a lid with a background of squares composed of rhombuses Hakodate - a cover showing the old government building of Hokkaido Hakodate - a cover showing the old government building of Hokkaido - colored Tel Aviv - Water sewage and tunneling Division - 2005 Sapporo - Hokkaido Development Bureau - "Chameleon" Sapporo - a "chameleon" lid that doesn’t exactly fit its surroundings with the city symbol Sapporo - round "chameleon" lid Barton-upon-Humber - lid made by Scunthorpe Foundry Co Barton-upon-Humber - lid made by Adams York Vienna - round lid with radial squares Comporta - lid with a background of squares and an opening handle in the center Cascais - Domestic - 1996 Canterbury - Dudley & Dowell London - glass and metal (5) London - glass and metal (6) London - Cover for Hammersmith Borough London - Cover for Hammersmith Borough (2) London -  A lid with 4 X shaped lines and small squares in it Lisbon - a lid with a beehive-like background Henningsvær - a cover that resembles a car steering wheel Cascais - a lid with a beehive-like background - Fort Lisbon - modular lid with 2 lifting rings in each part Lisbon - cover with the city emblem in the center York - Lid made by CW Kirk Iron & Brass Founders - Diagonal St. John’s, NL - Silent Knight - diagonal (2) London - Hampstead - Inspection cover Mevo’ot HaHermon - Concrete cover made by Gelem St. John’s, NL - Confined Space St. John’s, NL - Lid with the text: Danger St. John’s, NL - Diagonal cover made by Labco St. John’s, NL - Round lid made by Labco St. John’s, NL - Cover made by IMP Castings St. John’s, NL - Cover made by Nafco Rippingale - The Agripper Rippingale - Cover in a shape close to the triangle St. John’s, NL - Cover with a background of squares and square openings St. John’s, NL - Cover made by Trask Foundry St. John’s, NL - Confined Space (2) St. John’s, NL - Cover with background of different size circles St. John’s, NL - Cover from a former US Signal Corps base (2) London -  Air Tight Inspection Cover Cascais - General cover of Cascais municipality London - Air Tight Inspection Cover (6) Philadelphia - a round lid with the text CITY in the center Lisbon - PAMETIC model "chameleon" cover Cambridge - Glynwed Round Lid New Delhi - Indira Gandhi Airport - Round cover with prominent squares Civitavecchia - LA CHISERIA Civitavecchia - square covers with zigzag-shaped lines Civitavecchia - Square cover - diagonal Dehradun - A cover with a background of circles made up of squares St. John’s, NL - Cover with a background of squares and the year of production on it St. John’s, NL - Background of circles of different sizes St. John’s, NL - Cover made by LMA METAL Rhodes (Rhodes) - XTREME CASTING cover Bishop Auckland - lid made by Newgate Foundry Gonsua (Goa) - lid with two lifting openings Jerusalem - Multi time Genoa - lid with the city emblem Genoa - FERB - with one lift openings Messina (Sicily) - lid with two lifting openings Messina (Sicily) - square cover with handle Messina (Sicily) - cover with a background of arrowheads Mount Pearl, NL - Round lid made by Labco Mount Pearl, NL - Confined Space Mumbai - MCGM - Concrete Cover Mumbai - JRCC Mumbai - Concrete cover made by Vikrant Mumbai - Round cover with a background of prominent squares Mumbai - lid with two lifting openings Mumbai - IONL Mumbai - MCGM - Concrete Cover (2) Mumbai - MCGM Mumbai - M.C.G.B (2) Ivano-Frankivsk - Square cover with a background of rhombuses Lisbon - STM - diagonal modular Ahmedabad - A concrete cap with an arrow mark in the center St. John’s, NL - Cover with a background of squares Ahmedabad - Concrete cover made by MCA Ahmedabad - Lid decorated with "buttons" forming a swirl pattern Scunthorpe - lid made by Stanton & Staveley Ahmedabad - Cover made by Flortek Ahmedabad - Concrete cover made by Thermodrain Paradise, NL - Round lid made by Labco Conception Bay South, NL - Cover with WS in the center Conception Bay South, NL - Cover with WS in the center (2) Mumbai - KPI Mumbai - MCGM - Modular St. John’s, NL - Cover made by Trask Foundry (2) St. John’s, NL - Lid made by Trask Foundry from 1945 Mumbai - AHE St. John’s, NL - Square cover made by Zurn Canada St. John’s, NL - Confined Space (3) Mumbai - Metal lid with large slots St. John’s, NL - Cover from the Silent Knight series with checkered background St. John’s, NL - Cover made by CORIX Lisbon - STM - diagonal London - concrete lid with two small lids St. John’s, NL - Cover with a background of squares and square openings (2) Lisbon - Chameleon - Modular London - Cover made by G. Waller with a background of rhombuses London - Diagonal Modular Lid London -  A rectangular lid with a background of pegs - Modular Vienna - Octagonal lid (2) Tel Aviv - a large general cover that is probably quite old Lisbon - cover with a background of squares with a hole in the center Cascais - Cover with a background of squares Cascais - Chameleon - Modular St. John’s, NL - Cover from the Silent Knight series with rhombus background Lisbon - diagonal modular cover London -  A cover with 16 slots London - Lid with a background of rhombuses and a lifting handle in the center Warsaw - lid made by Metal-Top company Warsaw - cover with a background of circles made up of squares Baltimore - DTT Conduit Beer Sheva - Mei Sheva -2011 Encarnação (Mafra) - DOURO 300 type cover Warsaw - a cover with a checkered background and a classical Greek pattern around it Warsaw - a manhole cover intended for the infrastructure company Veolia Lisbon - a tiny lid with two letters M and a symbol of an anchor between them Mexico City - Algarin Mexico City - Coyoacán Zakopane - a purator type lid Zakopane - Cover with checkered background Mexico City - cover made by Polirimex Mexico City - Cuauhtémoc - works in progress Mexico City - a "chameleon" lid with metal stripes Cascais - Cover with checkered background Lisbon - CFL Lisbon - CFL (2) Warsaw - Vector (2) Warsaw - lid made by Bohamet - Armatura Ivano-Frankivsk - Cover with the emblem of the city Warsaw - cover for the Wavin company El Cajon - Broken concrete cover Warsaw - round cover with squares (4) Warsaw - round cover with squares (5) Warsaw - a lid made by the manufacturer KZO Ivano-Frankivsk - Cover with the emblem of the city (2) Legionowo - lid made by Bohamet Legionowo - round cover with checkered background San Francisco - SFPUC Ivano-Frankivsk - Cover with an illustration of a car Ivano-Frankivsk - An old lid made in Poland Breda - Cover with the emblem of the city surrounded by squares (2) Berkley - lid made by ZURN Warsaw - round cover with squares (6) Willemstad - Round cover with checkered background Lviv - Round cover with a background of the letter T horizontally and vertically Lviv - Round cover with a background of the letter T horizontally and vertically (2) Lviv - A lid with a symbol in the center Lviv - a cover from the period of Soviet rule Cusco - Cover with a background of rhombuses Cusco - Ministry of Housing Lviv - municipal utility company Madrid - rectangular lid with checkered background Warsaw - BIMs PLUS Lviv - cover with a background of squares - modular Warsaw - cover with a background of + Madrid - Compañía Inglesa Ivano-Frankivsk - A lid with lines radiating from a common center Ivano-Frankivsk - Old cap with the letters CZ on it Lisbon - STM - round Ivano-Frankivsk - Cover with the letter K in the center Warsaw - HYDRO-TOP Warsaw - round cover with squares (7) Jordan - Petra - Water Authority Aqaba - Silver Square cover Aqaba - a cover with a background of prominent squares Cascais - Luso 300 model Jordan - a lid with an illustration of a diamond in the center Lisbon - APT chameleon cover Monemvasia - IAS lid Kosmas - square cover with handle Warsaw - a lid that is partially covered with concrete Warsaw - a lid that is partially covered with concrete (2) Warsaw - lid made by Mabo company Manchester - a cover with a background of rhombuses Warsaw - small lid made in  Wegierska-Gorka Quito - Epmaps - Modular Manchester - cover with a background of the letter M in different directions Warsaw - a cover with signs in the form of the letter Pi, or a gate Warsaw - cover with a background of circles in the form of a maze Warsaw - round cover with squares (8) Warsaw - WCMB - cover with a background of squares Manchester - Round lid made by Clark Drain Manchester - Rapide cover Manchester - a cover with a checkered background and a raised axis on the side Manchester - a cover with a background of rhombuses (2) Manchester - a cover with a background of squares - modular

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