Create a realistic, high-resolution landscape of a lone female hiker standing on a rocky outcrop, overlooking a vast mountain valley. The scene is set during a crisp, clear day with a partially clouded sky. The hiker is wearing a bright red jacket that stands out against the natural surroundings, along with blue jeans and red hiking boots. Her back is turned to the viewer as she gazes into the distance where the mountains stretch endlessly, their slopes covered with a mix of evergreen and bare trees, typical of late autumn or early spring. A narrow, winding river snakes through the valley far below, reflecting the pale blue sky. The rocks underfoot are rugged and slightly weathered, with patches of dirt and sparse grass. The colors should be natural and vivid, emphasizing the contrast between the bright red jacket and the cooler tones of the landscape.