From Bulbapedia, the community-driven Pokémon encyclopedia.
The Sekra Range (Japanese: シクラさんみゃく Sekra Mountain Range) is a mountain range in northern Fiore. It is the setting of the final numbered missions of Pokémon Ranger. The mountain range reaches higher than 6,500 feet and is known as the "Roof of Fiore". At the peak of the mountains is a mysterious shrine, the Fiore Temple, that never opens. The Go-Rock Squad Base is also hidden within the mountains. Wintown is located at the foot of the range.
A small clearing in a forest contains Shiftry's Tree, also known as Shiftree. When walking past it, five Shiftry will jump out. Just beyond this is the Misthouse Lodge. The hiker who lives there is kind to all Rangers and will gladly recharge the Styler.
The Fiore Grand Falls are found to the west, feeding the river that flows through the area. In one minute, enough water to fill the Capture Arena 23 times goes down it.
On the first visit, Snorlax will block a short cut. Afterwards, it makes its final resting place in a cave in the mountains. It will wake up when every other Pokémon in the Browser has been captured, similar to Regigigas in the second Ranger game and Lugia in the third.
This is a listing of the Pokémon found in the Sekra Range after the credits: