Translation of annular in German

hope that we found a good learning platform. Would you like to write me in German and i will give you me reply in English? How do you think? thanks a lot for accepting me as your partner for language learning.
We decided to walk back and explore the city on foot. It was hard to cross the streets as there was an endless flow of motorcycles and bikes. One needed to just enter the street and cross it.
We had never seen a similar landscape. The lagoons had different kind of colors, blue, white, green and red. They were all surrounded by rocky, dark volcanoes making the entire landscape surreal.