The point in the Southern Hemisphere with the least exposure to the sun is the South Pole.

Here's why:

* Earth's Tilt: The Earth is tilted on its axis, causing different hemispheres to receive more direct sunlight at different times of the year.

* Winter Solstice: During the Southern Hemisphere's winter solstice (around December 21st), the South Pole experiences 24 hours of darkness. This is because the South Pole is tilted furthest away from the sun.

While the South Pole receives no direct sunlight during its winter, it does experience a period of "twilight" during the year. This is when the sun is below the horizon, but the sky is still illuminated by reflected sunlight.