Canyon Climbing Areas

There are a few areas in my canyon level where I need the player to climb. To do so, I placed an invisible ladder over top of the climbing areas. in this first example, the player has, what appears to be, a series of handholds built into the cliff conveying that there is an opportunity to climb. In reality, the handholds do nothing, the player is climbing the ladder.

This second example requires the player to climb up on to a tree to cross a river. Similar to the cliff area, we are using a hidden ladder. The black and cyan grid visible in the first image is an invisible barrier that prevents the player from walking into the river.