You've just landed on another planet. The air is breathable, the sky is blue, the plants are green, things don't seem terribly out of place.
But you have no food, no water, no supplies. Looking in one direction, you can see a low ridgeline lined with forest leading into the distance. Any competent scout will know this may be a good place to look for running water. Any competent scout will also point out the dust cloud off towards the end of the ridge.
Is it a cloud of smoke? Dust from activity? Just a weather event? Will you risk whatever is there to find clean water?
DanSinbadLee