4-level Illusion
This spell is intended to conceal a campsite from being seen at a distance. The caster must stand at the center of the area she wishes to effect, turning slowly in a circle for the time it takes to cast. When the spell is complete, the area will not be visible if observed from a distance greater than 120 feet, and will appear to be part of the landscape. Sound is also diminished, though loud sounds from within the hidden area will be audible. Anyone looking directly at the area may make a WIS saving throw to see if they notice anything. A successful save means they notice a shimmering over the area but cannot see within. Any creature that passes within 120 ft of the area will suddenly see through the illusion.