Question

is this a run - on sentence? archaeologists are unable to explain the mysterious structures in jordan, syria, and turkey called \big circles,\ made of stones piled several feet high, the two - thousand - year - old circles are more than 1,300 feet in diameter.

Explanation:

A run - on sentence incorrectly combines two or more independent clauses without proper punctuation or conjunctions. The given sentence has two independent clauses: "Archaeologists are unable to explain the mysterious structures in Jordan, Syria, and Turkey called 'Big Circles,' made of stones piled several feet high" and "the two - thousand - year - old circles are more than 1,300 feet in diameter." There is no proper conjunction or punctuation (like a semicolon or period) between them.

Answer:

yes