The Shivlinga , is perhaps the most famous symbol of Lord Shiva.

The Shivlinga , is perhaps the most famous symbol of Lord Shiva. Worshipped equally popularly as the Image of Shiva Himself ,it is found in abundance, with some variance, the world over, appearing in different timelines, and in many different forms.

A most esoteric symbol, it conveys different understandings at different levels, just like God means different things to different people.
The paramount understanding is this: that God in His Transcendence, in His Pure formlessness, timelessness, is both