raft building equipment on the riverbank

water nature green reflection tree yellow blue rock waterway vehicle sunlight plant river sea children building rafts out barrels problem solving teamwork pond lake ocean millpond oil drum boat barge pontoon construction fabrication making kids residential activity center centre outdoor education course exploration adventure countryside sports personal development resilience challenge hardcore worn used leadership work floats summer camp america glistening island escape wood poles beams logs foreground empty stones team barrals raft equipment riverbank rope knots tied lashed bound together