Look for large mounds of dirt with little or no vegetation. Observe the ground for any sign of an organized ant collective. If you find what appears to be a manageably small ant hill, guess again. You are looking at the model home of a much larger ant subdivision called 'Delicious Tourist Estates'. Avoid the entire area surrounding an ant hill.
Lightning is a cruel mistress.
As we all remember from meteorology class, lightning tends to seek out the highest grounded point in the area. Standing tall in an open field will definitely qualify you as high and grounded. Never pitch your tent near an isolated tall tree, because in an electrical storm they are far too busy sending out invitations for a good lightning strike. Take advantage of natural shelter, such as a grove of trees or a cave. They are called 'lowlands' for a reason.