Several locations around the world are off-limits to ordinary visitors due to environmental, security, or cultural reasons. North Sentinel Island in India's Andaman and Nicobar Islands is one such place, home to the Sentinelese tribe who live in voluntary isolation. The Indian government enforces a hands-off policy, designating the island and surrounding waters as a tribal reserve, prohibiting visitors from approaching or going ashore. Other restricted sites include protected natural reserves and areas with sensitive archaeological remains.
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