vintage poster style green mountain scene with river

green mountain scene vintage poster style ultra detailed plein air colorful cartoon nikita veprikov transparency lightbox tropical moist forest rocky mountains flat colour simple closeup full outline landscape river scenery nature retro artwork vibrant colors scenic view artistic painting cartoonish outdoor mountainous vivid vintage-style featuring hyper-detailed old bridge thick paint layers reminiscent pyotr konchalovsky's captures essence air shading add depth picturesque windows vista era generated