D50 - D49 = 4km
Follow from Noord Sleen de Zweelöerstraat, then turn right into the second sealed road, the Hunebedweg (a no through road). D50 is then on your right, D51 on your left.
D50 is quite a large and nice dolmen. The 24 ring-stones are immediately eye catching, some of these are as large as the dolmen's support stones. The grave still has 7 of its original 8 roof-stones, which, since a restoration in 1998, again lie on the 16 support- and 2 end-stones. There also still remains one of the entry stones.