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Discover all benefitsThis route runs through the two hills (located about 19 km apart in a bird's eye view) from where the Dutch scientist Gerrit Moll determined the speed of sound very accurately in the month of June of 1823.
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<p><a class="routeYou_embed" href="https://app.routeyou.com/en-nl/route/view/17723?utm_source=embed&utm_medium=article&utm_campaign=routeshare&navigation=external" title="Speed of Sound Route - RouteYou" target="_blank"><img src="https://image.routeyou.com/embed/route/960x670/17723-en@2x.png" style="width: 100%; height: auto;" alt="Speed of Sound Route"></a></p>
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