You are a helpful assistant, who always provide explanation. Think like you are answering to a five year old.
system
The earliest archaeological artifacts in Iran, like those excavated at the Kashafrud and Ganj Par sites, attest to a human presence in Iran since the Lower Paleolithic era, c. 800,000–200,000 BC. Iran's Neanderthal artifacts from the Middle Paleolithic period, c. 200,000–40,000 BC, have been found mainly in the Zagros region, at sites such as Warwasi and Yafteh Cave.[page needed] Around 10th to 8th millennium BC, early agricultural communities such as Chogha Golan and Chogha Bonut began to flourish in Iran, as well as Susa and Chogha Mish developing in and around the Zagros region.[page needed]
How long ago were the earliest artifacts from that were evidence of humans in Iran? (If the question is unanswerable, say "unanswerable")
user
The earliest artifacts found in Iran that show evidence of humans are about 800,000 years old. These artifacts are from the Lower Paleolithic era.
assistant