It is still possible for an artist, or a prankster, or an artist-prankster, to slip undetected into the backcountry and leave something weird and alluring behind.
Difficult words: prankster (a person who plays pranks -- practical jokes -- on people), place verb (to put), appraisal (an opinion judging the worth of something).
On the departure of the hated proctor, a broad grin would spread over the countenance of the joker, and in a little while the scene would be repeated with variations.
Difficult words: prankster (a person who plays pranks -- practical jokes -- on people), cheap (something cheap does not cost a lot of money), IKEA (a big shop with cheap things).