Man holding empty water bottles

20 24 years 20 25 years 20 29 years 20s caucasian ancestry people twenties adult adults bottle bottles boulder boulders caucasian caucasian ethnicity caucasians conservation conservation program conservation programs conserving container containers empty environment environmental issue environmental issues environmental responsibilities environmental responsibility exploration formation formations green half length hiking hold holding horizontal large rock large rocks leisure male males man mountain mountains natural world nature one person oregon outdoor outdoors plastic pollution portland recyclables recycle recycle container recycle containers recycled recycling recycling container recycling containers resources management responsibility reuse rock rock formation rock formations rocks rocky rocky terrain rocky terrains stand standing stone stone formation stone formations stones terrain terrains trash vacation waste disposal waste management water water conservation water management waterfall waterfalls young adult young adult man young adults