Description Second half 17th century Depicting the Prophet Aaron with a twig of an almond tree. H. 76.5 x W. 50.4 cm Note: This icon was part of the top tier of an imposing church iconostasis. In Eastern Christianity, an iconostasis is a wall of icons and religious paintings, separating the nave from the sanctuary in a church. Iconostasis also refers to a portable icon stand that can be placed anywhere within a church.