Create a highly detailed, mixed-media illustration of a group of trekkers navigating a rugged river path, with a fast-moving river winding through the rocky landscape. Position the trekkers mid-journey, outfitted in durable outdoor gear, backpacks, and hiking poles, as they move through the dynamic terrain. Render the scene in a layered, textured style that combines digital and traditional media: use digital painting techniques for bold, vibrant hues of blues and greens, capturing the lively energy of the river, while incorporating traditional watercolor washes for the sky and river, with charcoal or ink line work emphasizing the roughness of rocks and terrain. Capture the interaction of natural light with the environment, with sunlight filtering at a low angle to highlight splashes on the water’s surface and add subtle reflections along the riverbank. Use a medium-close perspective, as if observing the trekkers from nearby, with a 35mm lens simulation to capture both the trekkers and surrounding landscape in balanced focus. Emphasize the tactile contrast between smooth, flowing water and the rugged, rocky shore, using selective sharpening on key textures while applying a gentle grain for a unified, cohesive look. The overall atmosphere should be dynamic and adventurous, inviting viewers into the scene with a sense of excitement and exploration.