Explain what are rock shelters?

Explanation

**Step-by-Step Solution:**

1. **Definition of Rock Shelters**: Rock shelters are natural formations, often found in the form of caves, where early human life traces have been discovered.

2. **Location**: These shelters are typically located in forested areas or jungles, which provided a natural environment for early humans.

3. **Historical Significance**: Rock shelters contain debris and remnants from prehistoric humans, including tools and sometimes skeletal remains, which offer insights into their way of life.

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