caption: The image shows an open book with a drawing of a tree trunk on it. The book is open to a page with a detailed sketch of the tree trunk, with its branches and leaves clearly visible. The tree trunk is drawn in a realistic style, with intricate details and shading that give it a lifelike appearance. The leaves are drawn with a variety of colors, including shades of green, brown, and yellow, and the branches are drawn in shades of brown and green. The background of the page is a light blue, giving the image a peaceful and calming atmosphere.