text: Vihara with central shrine containing devotional images of the Buddha, dated to about the 2nd century CE are found in the northwestern area of Gandhara, in sites such as Jaulian, Kalawan (in the Taxila area) or Dharmarajika, which states Behrendt, possibly were the prototypes for the 4th century monasteries such as those at Devnimori in Gujarat. This is supported by the discovery of clay and bronze Buddha statues, but it is unclear if the statue is of a later date. According to Behrendt, these "must have been the architectural prototype for the later northern and western Buddhist shrines in the Ajanta Caves, Aurangabad, Ellora, Nalanda, Ratnagiri and other sites". Behrendt's proposal follows the model that states the northwestern influences and Kushana era during the 1st and 2nd century CE triggered the development of Buddhist art and monastery designs. In contrast, Susan Huntington states that this late nineteenth and early twentieth century model is increasingly questioned by the discovery of pre-Kushana era Buddha images outside the northwestern territories. Further, states Huntington, "archaeological, literary, and inscriptional evidence" such as those in Madhya Pradesh cast further doubts. Devotional worship of Buddha is traceable, for example, to Bharhut Buddhist monuments dated between 2nd and 1st century BCE. The Krishna or Kanha Cave (Cave 19) at Nasik has the central hall with connected cells, and it is generally dated to about the 1st century BCE.