We've done it several times. It takes about an hour and is mostly shaded. It can get slippery if there's been rain. We took a group in January 2020 - most enjoyed it but it was a bit much for our son's GF so fortunately we were able to find a cab to take us back to Annaberg. We've stayed in Coral Bay too late a few times and had to hike back in the dark, which is okay if you are adventurous and have flashlights.
