Name two Rift valleys found in India?

India does not seem to have any 'classical' rift vallies however there are some ancient 'Graben' (another name for these) that may be present within the geology:-

Godavari Graben

a possible Pleistocene/Holocene graben along Pondicherry in the northeast and Cumbum Valley

and the The Narmada river valley is documented as being a rift valley but the available documentation to support this is not conclusive.