The Jaczin mountains are incredibly tall, reaching heights of 18,000 feet at some parts. The permanent snowline is approximately 13,000 feet. During winter months snow often covers the mountains down towards just a few thousand feet above the base. The range is full of plateaus and jagged cliffs and canyons.
Under the surface of Jaczin lies hundreds if not thousands of natural springs, which bubble up, creating streams and in some spots geysers. The streams often combine into large rivers rushing down the mountain range. Over thousands of years the running water has carved deep gorges and ravines through the mountain. Near the base of the range there are a considerable amount of waterfalls of various heights. The tallest of these waterfalls is the Birn Falls at over 2,000 feet.
Between 10,000-15,000 feet lies an alpine-like biome. During the summer, the southern temperatures typically are between 40-60 degrees Fahrenheit. The farther north one travels the colder it gets. From this part of the mountain range north is a windy and tough habitat. It is notable for its steep cliffs and great boulders, and has little ground cover. Few tough and hardy plants grow in the midst of the rock and snow, but bristlecone pines grow strong and cover a large portion of the Mountains.
10,000 feet and below starts the transition from harsh alpine to temperate forests. The farther down the mountain one travels, the taller the trees grow, and the more grassy field start to pop up.