A meeting of mountains and lime-rich ground
Jämtland reaches from the mountain chain through extensive forest, mires, lakes and river valleys. Broad limestone areas surround Storsjön and continue northwards. The last ice sheet carried lime into glacial soils, and moving groundwater spread its influence beyond the exposed rock. This geology helps rich spruce forest, calcareous fens and orchid-filled ground occur surprisingly close to lean pine woodland and open mountain heath.
Elevation creates another sequence. Conifer forest gives way to mountain birch and finally treeless uplands, while snowmelt moves through streams, lakes and wetlands into the larger rivers. This is also a Sámi cultural landscape. Reindeer husbandry, prehistoric hunting pits and traces of later land use show a long human history that cannot be separated from the living mountain environment.
Landforms built by moving ice
Vålådalen preserves one of the county’s clearest glacial stories. Ice and meltwater shifted enormous quantities of stone and gravel, creating Issjödalen and the remarkable formations called Pyramiderna. The wider reserve moves between high peaks, flowering valleys, mountain forest, mires, lakes and clear running water. Limestone in its northern and western parts enriches the flora, including a notable range of orchids.
Rogen records a different phase of ice movement. Long ridges of moraine wind between deeply indented lakes, forming a pattern so distinctive that comparable terrain around the world is called Rogen moraine. Boulder fields, rounded mountains and ancient pines surround the water maze. The area also holds the winter range of Sweden’s only wild group of muskoxen.
Bear country and a river-cut canyon
Sonfjället rises in isolation above the forests of Härjedalen. Its mountain and wooded slopes form one of Scandinavia’s principal brown-bear strongholds, supporting a permanent population. Channels crossing the slopes were cut by water flowing along the margin of the melting ice sheet. Frost action and ground movement also organised loose stones into patterned rings, preserving the post-glacial story at the surface.
Hällingsåfallet is shaped by water still in motion. The river plunges more than forty metres into a canyon bounded by almost vertical rock. Spray maintains a humid pocket of forest and cliff where moisture-dependent mosses and lichens survive. Alongside Vålådalen and Rogen, the falls connect Jämtland’s underlying geology with its present ecology: limestone, glacial deposits, elevation and flowing water continually determine what can grow and live here.
