amphitheatre

noun
1
a round building without a roof and with rows of seats that rise in steps around an open space. Amphitheatres were used especially in ancient Greece and Rome for public entertainments.
آمفی‌تئاتر, تماشاخانه مدور
2
a room, hall or theatre with rows of seats that rise in steps
آمفی‌تئاتر, تالار مدرج, تئاتر مدور
3
an open space that is surrounded by high sloping land
آمفی‌تئاتر, تئاتر روباز, تأترگاه
The path emerges from the gorge into an open amphitheatre with slopes all around.