Sagarmatha Zone
Sagarmāthā () was one of the fourteen zones of Nepal until the restructuring of zones into provinces. "Sagarmāthā" is a Nepali word derived from सगर् (sagar) meaning "sky" and माथा (māthā) meaning "head".
Nigamananda Paramahansa
Again Nigamananda went out to seek a guru. In 1903 he met a "yogi guru" (yoga master) - whom he called "Sumeru Dasji" (otherwise known as Koot Hoomi Lal Singh or Kuthumi). Nigamananda was accepted as his disciple. Under Das's guidance he learned yoga. After hard practice, in the month of Poush 1904, Nigamananda was able to master Savikalpa samadhi (the trance in which the yogi loses his body consciousness and acquires a transcendental consciousness while retaining his individual identity). Soon after Nigamananda desired to experience the state of Nirvikalpa - the most advanced of yogic samadhis at Kamakshya, Guwahati Assam (Nilachal Hill). Nigamananda followers believe that he did enter by way of this samadhi and was returned into his body with the residual consciousness of "I am the master or guru" and in yoga he had visualized and practically understood in his own body his guru's vedic knowledge.