It’s like when my husband takes the clippers to his hair. Hey, Lava, you missed a spot. As we push into the interior, tree ferns come into view and thick undergrowth slows our travel.

As its name suggests, Kaua'i's Fern Grotto is a natural lava rock grotto covered in hanging ferns and tropical foliage. This special place was once the birthplace of the island's ali'i ...