Ultramarine/royal blue cascading fringe representing underground waterfall curtains in a deep cave. Beautiful abstract art. Beautiful digital art. Abstract. Abstracts. Abstraction. Digital background. Abstract background. Digitally made image. Copy space. Space for copy. Background. Backgrounds. Blue background. Backdrop. Backdrops. Blue backdrop. Blue artwork. Royal blue. Ultramarine blue. Klein blue. Colorful background. Vibrant color. Vivid color. Bright and bold. Cascade. Cascades. Cascading.