The answer to the crossword is Hidalgo, a state in Mexico located north of Mexico City. Hidalgo is one of the 31 states that make up the country of Mexico and is known for its rich cultural heritage and natural beauty. It is home to many archaeological sites, including the ruins of Tula, an ancient city that was once the capital of the Toltec Empire. The state is also home to the Huasteca region, which is known for its lush tropical forests and numerous waterfalls.