Pyrolave signs and information panels can be seen throughout the world providing information and guidance for visitors to many parks, public installations and historic sites. Pyrolave is a first choice material because of its unique longevity, stability and resistance qualities, providing permanent signs that survive the harshest of environments without fading or deteriorating. Some signs still in use are more than 100 years old. The natural climatic cycle is sufficient to keep the signs clean, and even stubborn graffiti can be washed off with soap and water. The product is unaffected by UV, sea water, salts and most acids, and will not burn or give off toxic fumes. Signs and information panels are "printed" onto the lava as part of the enamelling process, achieving crisp and accurate text and images across the colour spectrum.