The basilar artery is formed by the union of two vertebral arteries and it forms an important part of the posterior circulation of the brain. The present study is based on the observation of brain specimens obtained from the cadavers and specimens were preserved in 10% formalin for 1 month. The fevibond – acetone solution enabled to fix up and gave a shining smooth surface for further painting. Many vascular bypass and shunting procedures for the treatment of stenosis, occlusions, aneurysms, arterio–venous malformations of the arteries of the posterior cranial fossa. Anatomical variations, duplications, fenestration or the absence of certain vessel will significantly alter the plan of surgical approach and also determines the outcome of revascularization procedures. Hence a detailed anatomical knowledge is necessary for successful design and completion of any surgical procedures.