Buddhist Dictionary of Pali Proper Names by G P Malalasekera
Subhakūta
Subhakūta:The name of Missaka Mountain (Sīlakūta) in the time of Kassapa Buddha.Ceylon was then known as Mandadīpa.It was on Subhakūta that Kassapa Buddha landed when he arrived in Ceylon.Mhv.xv.131f.; Dpv.xvii.14.