'Ana Kumā, commonly known as Rats Cave, is a fascinating geological feature on the ancient island of 'Eua. Over millions of years, the island's landscape has been sculpted with various rocky formations, and Rats Cave is a notable example. The cave derives its name from a small tunnel that visitors must crawl through before reaching a narrow opening, which leads to the cliffside abyss below. This adventure is not for the faint-hearted!