Vocabulary consisting only from characters you are able to read
よじ上る
よじのぼる
to climb, to clamber (over, up), to scramble (up), to scale, to claw one's way upgodan, verb, vintrans
上
うえ
above, on top of, up, upper part, surfacejlpt5
二人
ふたり
two persons, two people, pair, couplejlpt5
山川
さんせん; やまかわ; やまがわ
mountains and rivers; mountains and rivers; mountain riversmix
水力
すいりょく
hydraulic power, water powermix