a serene mountain river flows through the lush forest, with sunlight streaming through the trees, creating a peaceful autumn

river forest waterfall autumn nature sunlight trees mountains scenic landscape peaceful tranquility outdoor reflection stream flowing water rocks sunrise wilderness fresh adventure travel environment beautiful serene carpathians yaremche prut fall outdoors calm natural beauty foliage streambed rapids hiking serenity ukraine green yellow september october idyllic cold stone rock horizontal cascade mountain flows lush streaming creating atmosphere perfect depiction nature#39aph39#s