Arroyo Sequit features rolling grassland mixed with chaparral. There is a picnic area and a wood-frame ranch house serving as a ranger residence. The site is considered a significant example of the homesteading era. The area is excellent for viewing the night sky as it is tucked away from the lights of Los Angeles. The loop trail descends into a lower valley and follows the wash around to a slight climb out of the valley.
From PCH, turn inland onto Mullholland Hwy. Travel 11 miles. Trail access and parking will be on the right. From the 101, exit at Westlake Blvd and head south to Mullholland Hwy. Go right (west) and travel 2 miles to the park entrance, which is poorly signed and easy to pass if not looking carefully. Hike in 0.2 miles to reach the loop trail.