Mountain peaks around Thiells NY, a hamlet in Rockland County, are situated within a region known for its diverse natural landscape. The area is surrounded by mountains, providing various outdoor experiences. Proximity to Harriman State Park and the wider Hudson Valley region offers access to numerous mountain adventures. The terrain features a mix of forested areas, rocky summits, and elevated viewpoints.
Last updated: May 14, 2026
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Easily one of the most fulfilling summits in Harriman Park.
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The mountain is only a couple of miles away from Pine Swamp mine, which you can get to using connecting trails. The mine itself is off the trail, though. Here is the highlight: https://www.komoot.com/highlight/4488751
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Gorgeous views await at the top of Bald Mountain! Definitely a nice spot.
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Hogencamp Mountain stands at 1,353 feet. It's a rocky summit with panoramic views of the area. Lovely!
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Here you'll find one of the park's nine lean-tos and enjoy nice views of the area.
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At the top of Jackie Jones Mountain, you'll find the last fire lookout of the area. It was built in 1928 and put out of use in the 1970s. It was however restored in 2018, and you can climb up the stairs to get a delightful view of Lake Welch, the Hudson River and surrounding hills.
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The summit is about 1,240 ft. above sea level. Lots of small flies (at least when we were there), and the views are so-so, BUT the scramble is so much fun, especially on the western side. Do this one for the thrill of the climb!
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Thiells, located in Rockland County, is surrounded by several prominent mountain peaks offering diverse experiences. Beyond the popular Big Hill, Bald Mountain, and Hogencamp Mountain, you can also explore Jackie Jones Mountain, Rockhouse Mountain, West Mountain, and Collaberg Mountain, each with unique features and views.
For breathtaking panoramic views, several peaks stand out. Big Hill offers amazing views, including glimpses of the Manhattan skyline on clear days. Jackie Jones Mountain provides a 360-degree vista from its restored fire tower, allowing you to see Lake Welch, the Hudson River, and even the New York City skyline. Rockhouse Mountain also boasts stunning panoramic views of the Hudson Valley's rolling hills. West Mountain is renowned for its sweeping views of the river and surrounding hills, especially scenic for an overnight stay.
Yes, Jackie Jones Mountain is notable for its historical features. It hosts a 60-foot steel fire tower, originally built in 1928 and restored in 2018, which you can climb for expansive views. The trails leading to its summit also feature old ruins, including the remnants of the ORAK mansion, an estate built in 1923.
West Mountain is an excellent choice for an overnight stay. It features a shelter that can accommodate around four people, with additional spots for pitching tents. It's considered one of the most scenic places in the Hudson Valley for camping, offering unbeatable sweeping views. Additionally, Big Hill offers a first-come, first-served shelter and existing fire rings for campers.
For those seeking a challenge, the hike to Diamond Mountain Summit is known for its fun scramble, especially on the western side. Jackie Jones Mountain, part of the Suffern-Bear Mountain Trail, is considered a moderately challenging hike. You can also combine the hike to Big Hill with Jackie Jones Mountain for a longer, more challenging loop.
While many peaks offer moderate challenges, Collaberg Mountain, at approximately 591 feet elevation, offers a more accessible elevation compared to some of the higher peaks, making it a local point of interest for those seeking nearby natural areas without extreme difficulty. For other easy hiking options, you can explore routes like Kennedy Dells Park or the Green Big Hill Trail, which are part of the Easy hikes around Thiells guide.
The mountain trails around Thiells, particularly on Rockhouse Mountain, are rich in biodiversity. Hikers often have opportunities to spot local wildlife such as deer and foxes. The lush forests provide a habitat for various species, making for an engaging nature experience.
Beyond hiking, the region around Thiells offers a variety of outdoor activities. You can find excellent mountain biking trails, such as those in the MTB Trails around Thiells guide. Road cycling is also popular, with routes like the Lake Welch Beach – Lake Tiorati loop available in the Road Cycling Routes around Thiells guide.
The changing seasons bring unique charm to the mountain peaks around Thiells. From vibrant fall foliage to fresh spring blooms, each season offers a different experience. Clear days are ideal for enjoying the panoramic views from summits like Jackie Jones Mountain and Rockhouse Mountain. Always check local weather conditions before heading out.
Big Hill offers a first-come, first-served shelter for hikers on the Suffern-Bear Mountain Trail, along with possibilities to pitch a tent and use existing fire rings. Visitors frequently mention the amazing views of the Manhattan skyline on clear days. If you're cycling, be aware of an approximately 70-meter hike-your-bike section to the Big Shelter, and watch your rear-derailleur among the rocks.
Hogencamp Mountain stands at approximately 1,353 feet and is a rocky summit offering panoramic views of the surrounding area. It's appreciated for its scenic vistas and is only a couple of miles away from Pine Swamp mine via connecting trails, though the mine itself is off the main trail.
Visitors consistently enjoy the gorgeous views from the summits, such as those from Bald Mountain and Big Hill. The opportunity to climb the restored fire tower on Jackie Jones Mountain for 360-degree vistas is also a highlight. Many appreciate the invigorating hiking experiences, the lush natural surroundings, and the chance to spot wildlife.


See even more amazing summits around Thiells with these guides: