The kundalini a force which makes itself known when all the muscles, sensations and thoughts of our body/mind loose their knots. When free flow of prana is established.
Just like a reflections on a lake become known only after the water in the lake has become still ,the power of kundalini becomes apparent only after it is awakened form her deep slumber. Or in other words only after the distraction which make her sleep are silenced.
When the constrictions in our body/ mind are released then only what lies within us truely shines and makes itself known. That is what is called the serpant power ,the kundalini.
This power rises from the mooladhara chakra to the sahasrara.
On the different level it is the bare life within us revealed when all the veils of ignorance dissolve.