AI overview
I don't have enough context to provide an accurate overview of "670." The context provided only indicates it's a year, but without additional information about what specific historical events, cultural moments, or other significant occurrences happened in 670 CE (or another calendar system), I cannot write an informed 2-sentence overview that would be both accurate and meaningful to a general reader.
AI-generated from the Wikipedia summary — may contain errors.
Article
The Great Mosque of Kairouan (Tunisia)
Year 670 (DCLXX) was a common year starting on Tuesday of the Julian calendar, the 670th year of the Common Era (CE) and Anno Domini (AD) designations, the 670th year of the 1st millennium, the 70th year of the 7th century, and the 1st year of the 670s decade. The denomination 670 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.