Create coloring book images of majestic mountain landscapes, featuring thin and delicate lines, against a clean white backdrop, in a vintage style. Illustrate a series of 3x4 format scenes capturing the grandeur of towering peaks, serene valleys, and winding rivers. These images should evoke a sense of nostalgia and wonder, inviting viewers to add their own touch of color and creativity. Illustration, pen and ink on paper, --ar 3:4 --v 5.2