Just south of the parking lot where Moonrakers is, is a small dog park and hiking area. While walking bentley I found this cool CAVE!!! I'm not particularly sure what the name of the trail is, but it's a fun and easy one. Definitely check it out next time your're in the Pacifica CA.
In light of exploration. I'm sorry I won't tell you exactly where I found the cave, but if you scale the sea wall a bit. I'm sure you'll run into it. Here is a photo taken from within the cave of my homie Kris. I can imagine a ton of creative photography type things you can do here. Especially when the light is just right. Enjoy.