This hunebed lies in a patch of woodland about 1¾ kilometres south of Exloo, and can be difficult to locate. If you have a map of the area (a Google Map screen dump is ideal), these instructions will get you there in about 30 minutes.
From the centre of Exloo, head south along Zuiderhoofdstraat for 700 metres till its intersection with Zuideresweg on the east and Oude Veldkampsweg on the west. Continue straight ahead along Zuideinde for 50 metres then head left into Valtherzandweg. After an early bend, follow this long, straight road for 700 metres till you reach the crossroads with Boesjeskampweg (on the left). Continue straight ahead, now along Exlooerzandweg, a quaint cobbled country road with woodland on your left and fields to the right of you. After 230 metres, a cobbled track heads left through the trees (Dalakkersweg), and after 300 metres (just before the path loops sharply to the left) you will see the hunebed lying in a woodland clearing on the right hand side.
Hunebed D31 Exloo suffered badly from grave robbers during the 19th century, and although reported as being complete in 1822, today, of an original 8 sidestones and 4 capstones, only 6 sidestones and a single capstone remain. Even so, this passage grave is so well worth the effort: it's glade in the woodland is enchanting, and the stones simply exude character.