<P> The Bhimbetka rock shelters are located in a dyke of the Narmada valley at about 45 km (28.0 mi) southeast of Bhopal (between Bhopal and Hoshangabad highway). The walls of these caves contain pre--historic paintings . </P> <P> The development of the Narmadā river has led to the inundation of some archaeological and architectural sites . The Department of Archaeology, Museums and Archives, Government of Madhya Pradesh, undertook rescue excavations in response, and transplanted a number of temples . An attempt to comprehensively list and publish lost sites has been undertaken by Jürgen Neuss . </P> <P> The Narmada river has a huge water resources potential, as much as 33,210,000 acre feet (40.96 km) of average annual flow (more than 90% of this flow occurring during the monsoon months of June--September), which according to estimates is greater than the combined annual flows of the Ravi, Beas and the Sutlej rivers, which feed the Indus basin . The 75% dependable flow is 28,000,000 acre feet (35 km). Till the beginning of planned development in the country was started in 1946, this huge potential went almost abegging without any effective utilisation thus denying much needed succour to the drought stricken people of the valley, both in Madhya Pradesh and Gujarat . Since then plans have been evolved, debated, finally legally examined and adjudicated by a tribunal, and agitated by NGOs . The Supreme Court has finally intervened to ensure that the implementation of the projects are not halted . </P> <Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (October 2015) (Learn how and when to remove this template message) </Td> </Tr> </Table>

Which among the following rivers flows through a rift valley