The cave is absolutely amazing - full of soda straws, stalactites, stalagmites, columns and draperies. I would definitely recommend seeing it if you are ever in the park.
Stalactite and stalagmite on the way to connect, in a few hundred years...
Column - a result of successful connection:

My parents, also happily connected:
Impressive draperies:

Stalactites:
Nice stalagmite:

More draperies and stalactites:
Waterfalls on the Cascade Creek leading to the cave: