A simple sinkhole experiment is a fun geography or earth science activity. Full instructions. Make a sugar cave, karst terrain, sink hole.

A simple sinkhole experiment is a fun geography or earth science activity. Full instructions. Make a sugar cave, karst terrain, sink hole.

A simple sinkhole experiment is a fun geography or earth science activity. Full instructions. Make a sugar cave, karst terrain, sink hole.

A simple sinkhole experiment is a fun geography or earth science activity. Full instructions. Make a sugar cave, karst terrain, sink hole.

A simple sinkhole experiment is a fun geography or earth science activity. Full instructions. Make a sugar cave, karst terrain, sink hole.

Written by Greg Van Eekhout