The art and nature trail Extra Terrestrial is located in the national forests behind the open-air museum Ellert & Brammert at Schoonoord. The area has some specific geological and historic features (glacier pit, pingo ruins, ancient oak walls) and is much varied. The art and nature trail is about 3.5 kilometres in length. Narrow, winding paths alternate with wider leafy roads. Here and there small mounds created by former sand drifts, now grown with trees, can still be distinguished. In turns the woodland is dark or full of light.