岩根 is read as いわね (iwane) and means rock.
いわね
iwane
いわねしぼり
Camellia japonica 'Iwaneshibori' (cultivar of common camellia)
いわしお
halite
いわ
anchor
いわや
cavern
いわま
among rocks
いわやま
rocky mountain
がんせき
rock
いわば
rocky area
いわと
rock door (to a cave)
いわはだ
bare rock
いわてけんりつだいがく
Iwate Prefectural University
いわてだいがく
Iwate University