isolated raw specimen rhyolite extrusive igneous rock stone white background |
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| navigate by keyword : rock soil geology iron flooring art asphalt boulder wall jewellery stonewall floor pattern wood formation terrain bedrock raw specimen andesite volcanic stone isolated white background railway ballast shortened volcanics scientific contexts formed lava erupted volcano mineral coal nature granite black fossil carbon macro object natural rough fuel ore solid texture close hard hand extrusive igneous crush stones civil engineer plutonic intrusive fragment engineer39aph39s rhyolite paving used attach rail sleepers |
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| The paving stones are used to attach the rail to the rail sleepers. Volcanic rock is a rock formed from lava erupted from a volcano. |
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