It's a pretty cool beach! Last year when I went, it was closed due to the mudslides. Glad it was open this year. Yes! You can capture the moonlight shining through the keyhole too certain times of the year. This trip was more about camping with the family so photography came second. But I got incredibly lucky with the Milky Way lining up above the keyhole, no research, just had the time to shoot it. Cheers!