つま先さき上あがり

noun

uphill path; gradually steepening slope

Describes a path or slope that rises gently at first and becomes steeper, like the shape of toes pointing upward. Often used in hiking or road descriptions.

• この登と山ざん道どうはつま先さき上あがりで、後こう半はんになるほど傾けい斜しゃがきつくなる。

  This mountain trail is a gradually steepening slope, getting steeper toward the latter half.

• つま先さき上あがりの坂さか道みちを自じ転てん車しゃで登のぼるのは大たい変へんだ。

  It's tough to bike up a slope that gets progressively steeper.