Recently I explored the Millard Falls trail in the Los Angeles National Forest. If you’re a hike enthusiast I’d recommend this path since it’s an easy 2.6 miles to and back path. The waterfall is amazing, thus I’d recommend to go there after a rain, especially in the spring. If you want to bring your pet, dogs are allowed on leash. More details on AllTrails (I’m not affiliate with, I just like the app).