-
1$\begingroup$ It, along with other symbology, is listed in the chart's legend $\endgroup$ – Steve Kuo Dec 12 '17 at 17:47
It appears to be the old Hi-Way drive in theater, given its placement near the highway and direction. It may no longer be such a good landmark as it closed in 2011, though the distinctive clearing is still visible.
An obstacle, an "Outdoor theater".https://www.faa.gov/air_traffic/flight_info/aeronav/digital_products/aero_guide/#sectional_radioaids