The Ascent begins just as Anne finally makes her way out of the maze of dino pens and holding facilities. A road leads up and away, curving up towards Mount Watson. A dangerous-looking canyon greets her eyes in the same direction... Off to the left is a friendly-looking forest path. :3 She decides.
Forest Path:
This follows essentially the same path that Ascent1 follows in the retail, however I intend for it to be greatly changed-up and a more exciting (and fresh) experience. This path is in fact anything but friendly and covers greater area along the same route as Ascent1. Along this path, Anne finds the remains of various dead hunters, and recalls the descriptions in Hammond's memoir. Hidden within this region is the illusive Hunters Camp - Anne has finally found it. When she reaches the seashore, she finds the continuation of the railroad tracks from the harbor. She can choose to follow these precarious tracks around the edge of the island or go up-hill, towards the mountain. Up the hill, she finds a lost Mayan village, which is surely as far west as the Mayans ever came. And of course, at the pyramid, she meets up with an Alpha Rex. Good thing she saved a toxin rifle from the Pens. After all that, she continues along the foothills of the mountain, finding more Mayan ruins and dead hunters. If Anne instead followed the tracks, she reaches an impasse in the rail (which proved a bit treacherous, anyway) and moves toward the mountain. She climbs.. and climbs.. and climbs.
Danger Canyon:
The road leading from the exit to the Pens goes into a small canyon. It just so happens to be infested with hungry tribe-C velociraptors, who are used to eating only birds and tiny lizards. They see a banquet on legs heading their way and make a B-line... After surviving all that, finding some dead hunters along the way and recalling descriptions from Hammond, she comes out of the canyon and finds the other end of the road which lead in from the Plains but was cut off. Continuing along, the road heads east and down a ways - passing relatively close by a hidden early colonial village, which she may choose to visit

Finally the two paths meet up with each other when the Forest Path, now anything but foresty, meets a bend in the InGen road. Anne continues forward, staving off hungry raptors as she goes. At some point, she reaches a clear vantage point, and for a moment the upper-mountain mist parts... and she can see out across the island, all to the sound of magnificent music. Shortly ahead, she finds the elevator used to lift materials up to the Mountaintop Facility. The lift is half-way up the elevator.. She eventually figures out how to bring it down to the ground where she can get on. It's then an easy flip of a switch on the lift to bring her up to the peaceful summit of Mt. Watson...