What is "bhavacakra"

The bhavacakra ( Sanskrit; Pāli: bhavacakka; Tibetan: srid pa'i 'khor lo) is a symbolic representation of saṃsāra (or cyclic existence) found on the outside walls of Tibetan Buddhist temples and monasteries in the Indo-Tibetan region. In the Mahayana Buddhism, it is believed that the drawing was designed by the Buddha himself in order to help ordinary people understand Buddhist teachings.

The bhavacakra is popularly referred to as the wheel of life, and may also be glossed as wheel of cyclic existence or wheel of becoming.