The island of Heligoland is a geological oddity; the presence of the main island's characteristic red sedimentary rock in the middle of the German Bight is unusual.

But it is for powder skiing above all that nature has given mankind the bowl, a geological oddity carved and smoothed by prehistoric glaciers, wind and flowing water.

The owners took advantage of this geological oddity to create an unusual outdoor cafe ringed by flowers.

Discover a region of windswept geological oddities before enjoying a night at a cowboy ranch.

The planet was a geological oddity, containing many rare though not valuable minerals, and was particularly rich in pyretimite.

I've seen it described as a "geological oddity," and have searched my reference books in vain for an explanation.

But a geological oddity, to say the least, especially in igneous rocks.

We lived for many years in a remote nook of the Utah desert where we developed a taste for isolated places and geological oddities.

Alcoves all along the wall of the stocky Prince's room displayed handpicked geological oddities, his delight and pride.

Cascada Los Tercios is a small waterfall that tumbles over a cliff of tightly packed hexagonal stone spires, a geological oddity related to volcanic activity.