>>719852526
Stick to the right side of the flat area to get a FUCK TON of luggage until you get to the Capybaras then climb up the left side of the mountain.
You will need a Soda to get up to a ledge with a lave stream near it and even afterwards there are nasty stamina draining climbs afterwards. It's a nasty climb but I just finished it on Ascent 7
If you want I can snap a pic of the map and draw up a diagram for you