sentences:  "It is known as Samudrakoop since it belongs to the period of Samudragupta.In fact five such wells are found in Ujjain, Mathura, Prayag (Allahabad), Varanasi and Patalpur (Pataliputra or Patna).It was dumped with garbage once but the efforts of a sage Dayaram brought its historical importance to limelight."