The nature reserve Jägaregap got its name from the sound between Lilla Jägareås and Stora Jägareås. It includes the two small islands to the east, which are called Karinöarna. The spruce-dominated forest is approximately 200 years old.
Växjöåsen (the Växjö esker) runs from Åby and goes south straight through Helgasjön. Just before it reaches the north-east tip of Helgö, which is called Stora Jägareås, it makes a couple of dives into Helgasjön. However, it returns to the surface and its crown forms the narrow island Lilla Jägareås