Near the tree there is an Athletics DC 22 check to climb up the wall +18xp. Failing the check will cause unknown amount of damage.
The way back is an Athletics DC 8 check +18xp. Failing the check will cause unknown amount of damage and get you down.
In the east side of the wall there is a fallen tree, climbing down is a Mobility DC 14 check +18xp. Failing the check will cause unknown amount of damage and get you down.
The way back is a Mobility DC 19 check +18xp. Failing the check will cause unknown amount of damage.
From the starting point there is a Mobility DC 22 check to jump over the gap +18xp. Failing the check will cause unknown amount of damage.
The way back is a Mobility DC 18 check +18xp. Failing the check will cause unknown amount of damage, but will get you over to the west side.