Best natural monuments in Mono County include a diverse range of geological formations, alpine lakes, and unique ecosystems. This region in California is characterized by its volcanic history, high-altitude landscapes, and saline lakes. Visitors can explore ancient tufa towers, columnar basalt formations, and numerous clear mountain lakes. The area offers a variety of natural attractions that showcase the powerful forces of nature and provide opportunities for outdoor exploration.
Last updated: June 26, 2026
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Great mountain lake that invites you to swim and is ideal for a short walk.
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Twin Lakes, as its name suggests, is a park comprised of a set of connected lakes to the southeast of Mammoth Mountain. Eruptions of Mammoth Mountain caused the formation of lava cliffs on one side of the lakes. The other side has a campground and ski lodge.
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These bizarre rock formations are formed in and around Mono Lake from the salty, alkaline water of Mono Lake in connection with underground springs.
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Mammoth Mountain Resort is a premier destination for skiing & snowboarding. However, the resort and its surrounding area also have plenty to do throughout the rest of the year. If you don't have a bike there are plenty of places to rent from so you can take advantage of the many miles of road and trails. If you ever need to meet up with someone just say you'll find them at the iconic Mammoth statue and you won't have any trouble finding each other.
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Convict Lake is a glacial lake and is surrounded by majestic mountains. The picturesque lake, however, has a very sad history. It gets its name from an incident that happened in 1871, when 29 convicts escaped from Carson City Jail and found a place to hide near the lake. After killing a mail carrier who had found them by chance at Convict Lake, they were followed by military officers and there was a bloody shoot-out. The surviving prisoners were found soon after and lynched.
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Horseshoe Lake sits at the end of Lake Mary Road and the Lakes Basin Bike Path. You can stop here for a swim or leave your bike and hike around the lake. One thing of note is that this area has an unusually high concentration of CO2 due to underground gas reservoirs, the U.S.G.S. has been monitoring the CO2 levels since the late 1980s.
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Twin Lakes is just a few minutes drive from Mammoth Lakes. In spring a huge waterfall thunders from the mountains. The lakes are filled with trout, so it is worth taking a fishing rod.
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Mono County offers several distinct geological marvels. You can witness the otherworldly tufa towers at Mono Lake (South Tufa Area), formed by the interaction of freshwater springs and the lake's alkaline water. Another fascinating site is the Inyo Craters, a series of volcanic craters formed relatively recently, offering a glimpse into the region's volcanic past. While not listed in the guide, the nearby Devils Postpile National Monument showcases incredible columnar basalt formations.
Yes, many natural monuments in Mono County are suitable for families. Mono Lake (South Tufa Area) is great for easy walks and birdwatching. The Twin Lakes area, with its scenic beauty and potential for fishing, is also very family-friendly. Horseshoe Lake is another excellent choice, offering easy access and beautiful surroundings for a relaxed outing.
Mono County provides diverse hiking opportunities. You can find easy trails like the Horseshoe Lake Trail or Crystal Lake Trail, perfect for a leisurely stroll. For more moderate adventures, consider routes within the Twenty Lakes Basin. For a comprehensive overview of trails, check out our guides on Easy hikes in Mono County and Hiking in Mono County.
The best time to visit Mono County's natural monuments is generally from late spring through early fall (May to October). During these months, the weather is mild, most roads and trails are open, and the alpine lakes are accessible. Summer offers the warmest temperatures for water activities, while fall brings stunning autumn foliage, especially around the lakes.
Absolutely! The region offers fantastic cycling routes. The Lakes Basin Path is a popular choice for a scenic ride, and the June Lake Loop provides beautiful views. For more options, explore our guide on Road Cycling Routes in Mono County.
The Mono Basin Scenic Area Visitor Center is an excellent resource. It offers interpretive displays about Mono Lake's unique natural and human history, including its tufa formations and vital role for migratory birds. You can also find more information on external sites like California State Parks or Visit Mammoth.
Yes, some areas are dog-friendly. Horseshoe Lake is noted as a dog-friendly natural monument, offering a great place to enjoy the outdoors with your canine companion. Always check local regulations and ensure your dog is on a leash.
Mono County boasts spectacular viewpoints. The Lake George & Lake Mary Overview provides magnificent vistas of these prominent lakes and the surrounding mountains. Minaret Vista, while not in the guide, is another renowned spot offering breathtaking views of the Ritter Range and the jagged Minarets.
Mono County is home to numerous stunning alpine lakes. Crystal Lake, nestled beneath the Mammoth Crest, is a popular summertime destination. Twin Lakes is known for its scenic beauty and thundering waterfall in spring. Convict Lake, surrounded by towering peaks, is also highly picturesque and popular for fishing.
Visitors frequently praise the unique and diverse landscapes. The bizarre rock formations of Mono Lake, the serene beauty of the alpine lakes like Crystal Lake and Twin Lakes, and the dramatic geological displays like the Inyo Craters are often highlighted. The opportunities for hiking, photography, and experiencing the powerful forces of nature are also highly valued.
For experienced hikers seeking a challenge, Donohue Pass offers a demanding trail with rewarding views. This mountain pass provides a strenuous but scenic adventure through the high Sierra Nevada landscape.
Mono Lake is exceptional for wildlife viewing, especially birdwatching, as it attracts millions of migratory birds due to its abundant brine shrimp and alkali flies. Horseshoe Lake is also noted for its wildlife, offering opportunities to observe local fauna in a natural setting.


Find even more amazing natural monuments in Mono County by checking out the top Highlights region by region:
Extend your search for the best caves by checking out these guides of the top ones in Mono County: