Shinto or kami-no-michi is the ethnic religion of Japan that focuses on ritual practices. The principal worship of kami is done at public shrines or worship at small home shrines called kamidana, or god-shelves. The public shrine is a building or place that functions as a channel for kami. A fewer number of shrines are also natural places called mori. The most common of the mori are sacred groves of trees, mountains, or waterfalls.