Complex sentence: Every year the location is the same-a barge that is docked into the touristic harbor of Mangalia, barge that consists of a huge scene, and a very large backstage area, enough to hold over 200 people.
Split into simpler sentences: Every year the location is the same-a barge that is docked into the touristic harbor of Mangalia. This barge consists of a huge stage and a very large backstage area, enough to hold over 200 people.