Your Guide to Mount Umunhum in San Jose

Mount Umunhum, a prominent peak in the Santa Cruz Mountains, offers breathtaking views, rich history, and a unique experience for hikers and nature enthusiasts. Located in the Sierra Azul Open Space Preserve, just south of San Jose, Mount Umunhum stands at 3,486 feet and is one of the highest peaks in the Bay Area. This guide will help you plan your visit, highlighting the key features and activities that make Mount Umunhum a must-visit destination.

Mount Umunhum is easily accessible from San Jose. The main access point is through the Sierra Azul Open Space Preserve, with the primary entrance located off Hicks Road. The drive to the parking area near the summit takes you through scenic mountain roads, offering glimpses of the natural beauty that awaits. Ensure your vehicle is in good condition, as the road can be winding and steep in places.

Hiking Trails

Several hiking trails lead to the summit of Mount Umunhum, catering to various skill levels and interests. The most popular trail is the Mount Umunhum Trail, a well-maintained 3.7-mile (one way) path that starts at the Bald Mountain parking area. This trail offers a moderate hike with a steady ascent, providing stunning views of the surrounding valleys and peaks along the way. For those seeking a shorter hike, the 1.6-mile Summit Loop Trail offers an easier route to the top, with equally impressive vistas.

The Summit: What is the cube at the top?

Reaching the summit of Mount Umunhum is a rewarding experience. At the top, you'll find the iconic radar tower, a remnant of the Cold War era when the peak was used as an Air Force radar station. The radar tower, also known as "The Cube," is not open to the public but serves as a fascinating historical landmark and a distinctive feature of the landscape.

The summit area has been developed with visitor amenities, including a viewing platform, benches, and interpretive signs. The panoramic views from the summit are nothing short of spectacular, with the San Francisco Bay, Monterey Bay, and the Santa Cruz Mountains all visible on clear days. It's an ideal spot for photography, picnicking, or simply soaking in the natural beauty.

Natural and Cultural History

Mount Umunhum holds significant cultural and natural history. The name "Umunhum" comes from the Ohlone word for "resting place of the hummingbird," reflecting the area's deep Native American heritage. 

The area is also rich in biodiversity, with a variety of plant and animal species. Keep an eye out for wildlife such as deer, bobcats, and numerous bird species as you explore the trails. The diverse flora includes oak woodlands, chaparral, and wildflowers that add vibrant colors to the landscape, especially in the spring.

Tips for Your Visit

1. Prepare for the Weather: The weather on Mount Umunhum can be unpredictable. Bring layers to adjust to changing temperatures and wind conditions, especially if you're hiking to the summit.

2. Stay Hydrated and Bring Snacks: There are no water sources on the trails, so carry plenty of water and snacks to keep your energy levels up during your hike.

3. Leave No Trace: Respect the natural environment by following Leave No Trace principles. Pack out all trash, stay on designated trails, and avoid disturbing wildlife.

4. Check for Trail Closures: Before you go, check the Midpeninsula Regional Open Space District website for any trail closures or updates. Weather and maintenance can occasionally affect trail access.

Mount Umunhum offers a unique blend of natural beauty, historical intrigue, and recreational opportunities. Whether you're an avid hiker, a history buff, or simply looking for a peaceful place to enjoy the outdoors, Mount Umunhum in San Jose is a destination worth exploring. Plan your visit today and discover the wonders of this remarkable peak.