This enigmatic and bizarre image has been created using a sampled portion of arrayed circles. The receding circles somehow produce an illusion of a cave, giving it a strong 3D effect. You will be tempted to put your hand through it.
Circles can be used to simulate a ball shape as they carry 3D information of a sphere. At least our eyes interpret them as such.
Another variation of the technique above. The image strongly invokes a feeling of wellbeing and energy. This could make a good image for meditation.
