A sacred place. River सरस्वती which flowed westwards changed its course here towards the east so that it (river) might see the sages of नैमिषारण्य . There is a story about it in महाभारत as follows:--

The यज्ञ conducted by शौनक at नैमिषारण्य ended in the twelfth year. The ऋषिस् who came from various parts of the country were put up in आश्रमस् built on the banks of river सरस्वती . But, many ऋषिस् did not get accommodation there and they moved eastwards. The River सरस्वती which felt sorry that the ऋषिस् could not be accommodated also turned and moved eastwards, and thus afforded space for आश्रमस् to be built on her banks. [mh-9-37-1 ] Mahābhārata • Śalya parva .