Tamgaly-Tas is approx. 120 kilometres north-west of Almaty city, in Kazakhstan.
The area is famous for ancient stone carvings, (1) which are called petroglyphs. (present simple)
The rock carvings (2) were_ found by archaeologists in 1957. (past simple)
The carvings (3) _were_ made almost 3,000 years ago by a hunting, nomadic community using stone or metal tools but not all of them date from the same period. (past simple)
The daily lives and the spiritual world of the people (4)_are_ pictured: rituals, dances, ornaments, hunting and herding scenes. (present simple)
The drawings (5) _are_ best seen in the afternoon on a sunny day. (present simple)
From the nature of the drawings, it is believed that the canyon
(6) _was_ used as a tribal settlement for nomadic peoples dating from the Bronze Age and later. (past simple)
Some burial mounds and graves (7) _were_ built which indicates the area was also a ritual site. (past simple)
Unfortunately, many of the stone carvings (8) _are_ damaged as the area suffers from shifts in temperature, rock movements and fires in the steppes.
However, the site (8) _is_ registered by UNESCO as World Cultural Heritage and great care (10) _is_ taken to preserve these outstanding natural and cultural features. (present simple)
Long story short
Past Simple используется для одноразового действия в типо поезд уехал в 6: Train left at 6 p. m. Или же человек сделал что-то в какой-то краткий период времени, это действие не заняло времени: I blew up at myself ( я разозлился на себя)
Past continuous используется для обозначения длительности действия, занимающее какое-либо время. For instance: I was eating my breakfast for 10 min at the morning ( я ела его на протяжении 10 мин. действительно, мы не можем просто проглотить еду!) или же he was reading that book, they were here yesterday, I was going to go to the party but now I don't want to do it.
