puna manawa whenua
1. (noun) spring from deep underground, unfailing spring.
Nā ka keri ngā pononga a Īhaka ki te awaawa, ā ka kitea e rātou i reira he puna manawa whenua (PT Kenehi 26:19). / And Isaac's servants digged in the valley, and found there a well of springing water.
See also manawa whenua