I have no idea if these might be sanddunes or some other type of geological phenomenon. The "skeleton" is about 50 meters in length.
Update: Looking around I found that many of the hills in this region seem to have these tentacle-like features growing radially outward as shown in the two pictures below. So it's not a burried whale after all! :)
What they really are though, I don't know... Quite intriguing and almost life-like, isn't it? Click on the pictures for full scale. All pictures are found within 4 km of the proposed "whale".