Taking a hike up Pacaya -- an active volcano just outside Antigua -- is a truly rewarding experience that should not be missed. I did the hike in the late afternoon to get there for sunset, which I highly recommend. The sun wasn't too intense for the rather hefty climb, and just as we hit the summit, the light started to change, providing for some terrific scenery. (Just bring a flash light for the descent!) Upon reaching the top, I started to notice a difference in the ground beneath my feet, and upon looking up at those in front of me, I really felt like I could be on the moon.