The Palas were patrons of Mahayana Buddhism. The Palas were followers of the Mahayana and Tantric schools of Buddhism. The Sena dynasty started around 1095 but only finally defeated the Palas around 1150. Both Nalanda University and Vikramshila University reached their peak under the Palas. The trail to the forest starts from the Sungei Palas Boh Tea Plantation. It was subsequently ruled by the Palas and Senas. However, Mahipala rejuvenated the reign of the Palas. Shadda with a checkered pattern is based on the palas and jejim principle. It was built around 1200, at the same time as the original Palas. However, Mahipala I rejuvenated the reign of the Palas. A new stairway was erected next to the palas. Mahayana Buddhism flourished under the Palas between the 8th and the 12th century. A chapel was added to the Palas. The Candra Dynasty who ruled over eastern Bengal and were contemporaries of the Palas. Also, the carved figures of "dwara palas" are found at the entrances.