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twenty-meter-lock lock chamber upper gate slovakia gabcikovo danube danube side channel transport system waters ship travel industry lock wall concrete see also pictures of nr

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danube lock flow shipping barrage ship river cruise cruise ship lock chamber wachau

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danube lock barricade overflow enormous power generation austria flow electricity concrete gantry crane

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danube barricade barrage defense water flow nature hydropower dam power plant waterfall lock electricity power generation regulation jochen stone border austria

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lock shipping water flow waterway barrage danube historical ship nature power plant hydropower architecture

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danube lock entrance upper water jochen stone germany austria national border barrage wind sock two chamber airlock danube valley steep forest nature niederbayern

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slovakia danube how to get to the 20-meter-lock zwillins lock gabcikovo right chamber in the revision huge investment industry waters sea port nautical gate is open nature entrance free see also pictures of nr

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