Windblown.

Sandblasted Hollow Form

Here is the first of an intended trio of heavily sandblasted Douglas Fir hollow forms with the soft grain completely removed around the top area, which  hopefully gives the impression of being eroded away by wind and sand.
 Its just four inches tall and turned in a tear drop shape to around 3mm thickness down the sides with the bottom left about 12mm to keep it standing. Although the bottom is thicker you cannot tell it is visually by way of careful hollowing to keep a matching gentle curve to the inside.
 As said I plan on completing a trio of these and will mount them on a base. Watch this space!!