Crest of sand dune

Patterns in sand

Rocky outcrop in desert

Patterns in sand, elevated view

Patterns in wet sand

Sunlight on wet sand

Sand dunes in desert

River carvings in the sand

River carvings in the sand

Desert sand at Death Valley, California

Kolmanskop interior view of room: doorway with green painted walls leading to other rooms, and sand dune which fills the room, abandoned German mining town, Namib desert, Namibia, South West Africa

Kolmanskop interior view of room: doorway with orange painted walls and stencilling, leading to other rooms and sand dune which fills the room, abandoned German mining town, Namib desert, Namibia, South West Africa

Desert sand at Death Valley, California

Desert sand at Death Valley, California

Close up of sand being blown into ripple pattern by winds, late afternoon sunlight, Namib desert, Namibia, South West Africa

Kolmanskop interior view of hallway: curved wooden stairway with turned wooden balustrade, san over steps, abandoned German mining town, Namib desert, Namibia, South West Africa

Whale tail

Whale tail

Sand illustration

abstractive patterned background

Typical Tourist 6 Linda Braucht (20th C. American) Computer Graphics

Flora & Fauna - line art - a 19th century engraving Animal Shell Nautilus Interior The chambered shell of a cephalopod (a small, floating octopus creature)

Desert at night

Dark dunes march along the floor of Gale Crater, Mars.

Titan boasts liquid hydrocarbon lakes at its north pole

Mars outpost near mesa.

Dark dunes are shaped by the moon's winds on the surface of Titan.

Curved ridge of sand dune