The word ECHO rendered as massive brutalist typography composed of translucent crystalline glass formations and fractured ice shards, each letter formed by sharp geometric prisms refracting rainbow light spectrums, oversized bold text suspended in an infinite frozen void, Swiss grid composition shattered by prismatic light distortions, deep arctic blue and frosted silver palette with warm amber light rays and magenta sunset reflections, volumetric ice particles and floating snow crystals, experimental typography poster art, hyper-detailed 3D frozen cathedral environment, dramatic upward perspective through towering ice spires, ethereal serene mood