Pile of Dirt That’s Home to Picnic Invaders
Puzzle 4 of Treasure Hunt Pack
Question is: Pile of Dirt That’s Home to Picnic Invaders
and the answer is: ANTHILL
Word Meaning:
ANTHILL — A cone-shaped structure built from sediment and other available materials by ants or white ants (termites), and beneath which the colony nests.
Definitions from Wiktionary.