Hoverberget is made of porphyry, and originates from the same period as the Scandinavian Mountains. For millions of years it has been moving eastwards, and it now lies isolated and apart from other mountains. The mountain is rich in flora, with several orchid species, and many of the plants grow at their northernmost growth boundary. There are several rare species of moss and lichen. The mountain also has a rich bird life, with many birds of prey such as the common kestrel, the Eurasian sparrowhawk and the long-eared owl. Besides more common mammals, Hoverberget is also home to Eurasian lynx.