Harbison Canyon, California

Crest is an unincorporated community in the East County region of San Diego County, California. The Crest census-designated place (CDP) had a population of 2,828 at the 2020 census, a rise from 2,593 at the 2010 census.

Flinn Springs is an unincorporated community in the East County region of San Diego County, California.

Dehesa is a populated place in San Diego County, California. Dehesa is located along the Sweetwater River and Dehesa Valley between Harbison Canyon, Crest, Alpine, and Granite Hills. Dehesa is a mainly agricultural community. It is served by the Dehesa School District, which consists of one school serving grades kindergarten through 8. It is located in the 53rd Congressional District of California.The reservation of the Sycuan Band of the Kumeyaay Nation runs along the border of Dehesa. Dehesa is also the home of the Sycuan Casino.

Marshal Scotty's Playland Park is an abandoned theme park in El Cajon, California. The park contained multiple attractions, such as a railroad, a 20 ft (6.1 m) Ferris wheel, a water slide, a small roller coaster, and a tilt-a-whirl ride. The park is privately owned and is now mostly abandoned and fenced off. In 2017, numerous relics were still visible from the road, through overgrown vegetation. Starting in 2015, the park now opens every Friday and Saturday in October as a "Haunted Amusement Park" and scare trail.

The Descanso, Alpine and Pacific Railway is a 2 ft (610 mm) narrow gauge heritage railroad owned and being relocated by the Pacific Southwest Railway Museum in Campo, California. It was owned by Roy Athey and it opened in Alpine in May 1990. This little operation was a sole proprietorship and has one locomotive, a 1935 Brookville Equipment Corporation unit. The railroad had three stations; Shade, El Pozo and High Pass. The railway offered free train rides and historical narration to the public on most Sundays.

Singing Hills Memorial Park is a cemetery dedicated in 1996. It is located on the outskirts of El Cajon, California in the Dehesa Valley. A 65-acre (260,000 m2) wildlife preserve surrounds the dedicated 35-acre (140,000 m2) of burial, mausoleum and cremation property. Buried in Singing Hills is professional football player Henry Schmidt (1935–2021).

Lake Jennings is a water supply reservoir in San Diego County, California. It is located in Lakeside, Ca.

Loveland Dam (also called Sweetwater Falls Dam) is a dam across the Sweetwater River in San Diego County, California. The dam forms long, narrow Loveland Reservoir which stores 25,387 acre-feet (31,314,000 m3) of water. It is operated primarily for flood control and municipal water storage in conjunction with downstream Sweetwater Dam but the reservoir is also open to the public for fishing.The dam stands 203 feet (62 m) high and spans 765 feet (233 m) across the narrow gorge of the Sweetwater River, 2.4 miles (3.9 km) south of Alpine. It is built entirely of concrete and has a thin arch design. Loveland is the younger of the two dams on the Sweetwater River; the other, Sweetwater, was built in 1888 while Loveland was only constructed in 1945. It is named after Chester H. Loveland, president of the California Water and Telephone Corporation, the firm that built it. The Loveland Reservoir is considered a better water storage facility than Sweetwater because of its much smaller surface area (454 acres compared to 960) and comparable capacity, thus it is less vulnerable to evaporation.

Rancho Cañada de los Coches was a 28-acre (0.11 km2) Mexican land grant in present-day San Diego County, California given in 1843 by Governor Manuel Micheltorena to Apolinaria Lorenzana. This small land grant was located just west of Flinn Springs and in the center of Rancho El Cajon. The San Diego Mission fathers formerly watered their swine in dry seasons at a little spring arising from subterranean sources, thus giving it its name of "Glen of the Hogs". The site is now registered as California Historical Landmark #425.

Christian High School, part of the Christian Unified Schools of San Diego, is located in El Cajon, California. It offers a college preparatory education, with the goal to "prepare students who are academically and spiritually prepared to be a light in their community and who understand the nature of God, His Word, and the importance of impacting the world for Christ." Christian High was founded by Dr. Timothy and Beverly LaHaye in 1965.In the first year, 1965–66, the school included grades 9-11. The school's principal was Guy East, a missionary with Wycliffe bible translators who was from Scott Memorial Baptist Church, the sponsoring church. He was in the country while on furlough. The principal from 1966-1972 was Pete Steveson. During that period, grades 7-8 and 12 were added. The first graduating class in 1967 included sixteen seniors. In those early years, the school grew from 32 students to 330 students. The school began to participate in interscholastic sports with other schools in the area. Over that time, the school added football, basketball, track, baseball, and cross country.

Shadow Mountain Community Church is a Baptist megachurch located in El Cajon, California, a city in San Diego county. It is affiliated with the Southern Baptist Convention.

Wright's Field in Alpine is a 230-acre nature reserve in Alpine, California. The property was purchased in 1990 by Back Country Land Trust.The ecosystems found in Wright's Field include native grassland, Engelmann oak woodland, riparian (streamside) habitat, vernal pools, and coastal sage scrub/chaparral. Native and nonnative plants found in Wright's Field include sunflowers, buckwheat, sugarbush, canchalagua, wallflowers and Engelmann oak trees among others. Special wildlife in this field are the Hermes copper butterfly and the Quino checkerspot butterfly. Also, a conservation project for the rare plant, thornmint, is currently being held in this field with successful amounts of progress and research.