21.   One of the most popular scenarios, duplicated by many operators, begins when visitors enter a crypt.

22.   Robert Lipsyte has several times traveled to a land that visitors enter only reluctantly.

23.   Six years later, the Ogarrio Tunnel was completed, allowing visitors to enter the town in a less rustic manner.

24.   Some visitors enter a labyrinth with a particular vexing question in mind, some repeat a mantra, and others simply enjoy the walk.

25.   The campus, an extension of Burnham Park, is to be free of cars, but visitors may enter on foot, roller skates or bicycles.

26.   The chow yawns when visitors enter.

27.   The exterior is of thick stone, the windows are small slits and the legendary entrance is a low door that visitors must enter bending over.

28.   The forest floor on the island was the first clue that visitors had entered a renewed primeval landscape.

29.   The proposal would put a cap on how many visitors could enter the park on a given day, possibly leaving some people turned away at the park gates.

30.   The Tyuonyi site is managed by the National Park Service, which maintains a visitors center and keeps the caves stable so that visitors may safely enter.