Unable to prevent revellers urinating against their trees, Roskilde Festival in Denmark installed tree-mounted urinals by Dutch designers Aandeboom.

The movie above shows the P-Tree urinals in use at Mysteryland festival near Amsterdam.

The urinals are made of rotational-moulded plastic and can either connect to the main sewage system or a tank with a pump.

50 of the orange urinals were strapped to tree trunks for the festival last weekend.

Here are some more details from Aandeboom:

P-Tree at Roskilde Festival 2011

The P-Trees were a great success at the Roskilde Festival 2011 in Denmark, with more than 100,000 visitors and many of them using the P-TREE more than once. For Roskilde AANDEBOOM produced 50 P-Trees in the typical Roskilde Orange color. The P-Trees were placed on 2 different spots near the main stage. By using the P-Tree the festivals problem with public peeing was significant reduced.

The P-Tree is a temporary tree-friendly urinal that can be fixed on every tree using straps and lashings. The P-Tree gives a feeling of freedom.

The P-Tree can be hooked up to a central sewage system or connected to a tank with a pump.

Material: rotation moulded recycled plastic, stainless steel and straps and lashings. The P-Tree and lashings are available in different RAL colours.