A badger sett is like an underground apartment building. It can have dozens of entrances, hundreds of metres of tunnels and many cosy sleeping chambers lined with dry grass and leaves. Some setts are used by the same badger family for hundreds of years, with each new generation adding new tunnels and rooms.
Badgers are nocturnal - they come out mostly at night - and they spend their evenings snuffling about for food with their powerful noses. Their menu includes earthworms (their absolute favourite), beetles, berries, mushrooms and acorns. On a warm, damp night a single badger can eat hundreds of earthworms.
Despite looking a bit grumpy with their striped faces, badgers are gentle and sociable with each other. A family group is called a clan and might have six to fifteen members. They groom each other, play together and work as a team to keep the sett clean.
In Luxembourg you are most likely to find badger setts in old mixed woodland with plenty of earthworm-rich soil nearby. The best way to spot a badger is to sit very quietly in the woods just after sunset and wait - eventually a broad, low, waddling shape will emerge from the darkness.