Only when Ajna chakra opens, forms of Lingam, Shiva and Vishnu cud be realised and its really understood why these r worshipped, not otherwise...
with it this is also clearly understood that Brahma has no existence in reality...
Brahma refer to the "self as whole forms of creation coming in fore"
Generally all books on kundalini have been written by those in whom Ajna has never opened...
people make fool of themselves by imagining different triangulation forms with attention at different chakras..