(1) The helicopter was returning from a successful rescue mission off Helvick Head when it hit a sand dune in thick fog.

(2) No 3 on the list is the Viking burial boat discovered sticking out of a sand dune on the island of Sanday in 1991.

(3) We had both gotten up early and drove to Jockey's Ridge state park, the largest sand dune on the East Coast.

(4) A herd of camels strolls past as we pull up at a sand dune for the second night of desert camping.

(5) A sand dune

(6) Because the fish will be waiting in ambush behind the top of the sand dune watching for baitfish or whatever to be washed into their field of view.

(7) The terrain he covers will vary from sand dunes to dried up riverbeds to tarmac roads - but it will always be tough.

(8) I recognise that there is a fair bit of information to be absorbed there, but it is quite a lot like wading through sand dunes .

(9) It does have sand and sand dunes , but primarily that red, raw earth that we see so often in paintings.

(10) The action of the play takes place in a remote ramshackle beach house built on sand dunes .

(11) Eventually, he reached a beach and dragged himself through sand dunes until he reached a disused campsite.

(12) From the higher seats, visitors can glimpse stunning views of sand dunes and sparkling sea.

(13) On this part of the coast the dunes of the Namib Desert come right down to the sea.

(14) It has 8,000 kilometres of shores going from sand dunes to volcanic headlands.

(15) It grows on upper shores or in wet hollows in sand dunes , on the West coasts of Wales and southern England.

(16) Nothing but vast sand dunes and arid desert far as the eye could see in all directions.

(17) For day after day south of Marzuk we saw nothing but stony wastes and sand dunes with never a blade of grass or bush to relieve the aridity.

(18) The group will face eight days of walking across rocky plateaus, sand dunes and salt pans.

(19) There were also sand dunes and shingle banks that were later used for building roads in the new town.

(20) It is generally agreed that the linear dunes in the Namib Sand Sea have extended from south to north.