Zengpiyan National Archaeological Park gives Guilin something deeper than karst scenery. The cave site preserves evidence of human occupation thousands of years old, including finds tied to early pottery and the complex shift between foraging and farming in southern China.
It is a specialist sight, but a good one if you have already seen the postcard hills and want a different kind of landscape story. The park works best with a guide or museum context, because the cave itself is much more interesting when you understand what was found there.