Well, I've never gone diving or hiking there but try this:

Let's Go Hawaii

Welcome to Downtown Hilo

Volcanos National Park

Welcome To Arnott's Lodge and Hiking Adventures Web Site

Outdoor Adventures

You can also go and rent a 4Runner and do some off roading-
Harper's Hawaii 4 wheel drive rental

<small>[ January 28, 2003, 06:45 PM: Message edited by: sherri_girl ]</small>