Biereiche, Natural monument oak tree in Merzig, Germany.

The Biereiche was an oak in the Kammerforst forest near Merzig, estimated at over 300 years old with a trunk diameter of at least 1.20 m, making it one of the oldest trees in the Saarland. It was felled in 2005; the clearing where it stood, the Lichtung im Kammerforst, remains a landmark on the forest paths.

The oak stood in the Kammerforst near Merzig for an estimated 300 years or more, with a trunk diameter of at least 1.20 m, making it one of the oldest trees in the Saarland. It was felled in 2005. The clearing where it grew remains the site of the Biereichenfest, held every year since 1956.

The name comes from the Biereichenfest, started as an April Fool's joke: in 1956 Saarbrücker Zeitung editor Theo Plettenberg announced a crate of beer would be left under the "Biereiche" on 1 April for walkers. The joke became an annual festival on the clearing in the Kammerforst, once run by the Saarfürst brewery and now by the Brotdorf club "Die Strammen e.V."

The tree was felled in 2005, so there is no trunk to visit; the clearing in the Kammerforst where it stood is the meeting point for the Biereichenfest held there each year. The site lies in the Merzig forest, reached on foot via forest paths, so wear walking shoes.

The Biereiche was felled in 2005, so visitors today find only the clearing in the Kammerforst where it stood. The tree's name lives on in the Biereichenfest, held each year on that clearing since 1956, when a Saarbrücker Zeitung editor, Theo Plettenberg, announced as an April Fool's joke that a crate of beer would be left under the oak on 1 April.