Place a backflow incense cone in the crater at the top of the volcano & watch as the lava like smoke erupts & cascades down the sides before pooling at the bottom. The volcano design & shape is simply perfect for a backflow burner, the falling effect of the smoke is really hypnotic, a beautiful visual effect as well as filling your home with beautiful fragrance. Use with backflow cones only 16cm Tall x 19cm Width Made from resin