<p>The sounds of chainsaws could be heard in videos captured by activists in a forest west of Cologne on September 14, where protesters have camped for six years in opposition to plans to expand a nearby coal mine.</p><p>Police entered the forest a day earlier</a> after authorities in North Rhine-Westphalia ordered the clearance, citing safety concerns, Deutsche Welle said</a>.</p><p>The activists built the tree houses in Hambach Forest to block to expansion of a nearby open-cast brown coal mine. The expansion, by energy company RWE, would involve the clearing of 100 hectares (247 acres) of forest, Deutsche Welle said. Credit: Hambacher Forst via Storyful</p><br />
