Left: View from the Lago Diavolo dam looking west.
Center: View from trail 208 - looking east.
Right: Rifugio Longo with green backdrop.
Right: Rifugio Longo with green backdrop.
Starting in Carona, we followed a combination of CAI trails 210, 209, 208, 224, and 258 in a loop that took us through forests, past reservoirs and waterfalls, and into one of the most historically interesting valleys in the Bergamasque Alps. The hike ended, as many of our hikes do, with an excellent lunch at the rifugio. This is one of the few rifugi we haven’t been to in the Orobie, so it was nice to get a chance to visit.
Overview
Length: 19.7 km
Elevation Gain: ~1,010 m
Duration: 7 hours total including lunch, 4 hours 51 minutes moving time
Highest Point: 2,142 m
Starting Point: Carona (1,189 m)
Destination: Rifugio Fratelli Longo (2,026 m) and Lago Diavolo
The Route
We started in Carona (here) on CAI trail 210, a mostly paved service road that climbs steadily into the valley. Around the third kilometer we left the road and took CAI trail 209, a forest trail that climbs through the trees to meet trail 208, the Sentiero delle Orobie Occidentali. From there we continued on trail 224 to Rifugio Longo.
After reaching the rifugio, we continued up to Lago Diavolo, one of the iconic alpine lakes of the Orobie. The lake sits beneath rugged peaks and beside a dam that today holds back the alpine waters. Today, the lake looked pretty low to our eyes.
We returned to the rifugio for lunch before descending on trail 258, a narrower and more interesting trail that drops into the valley and follows portions of an old aqueduct before reconnecting with trail 208 and eventually Carona.
One of the highlights of the day was encountering a large herd of Bergamasca Sheep. Seeing roughly 1,500 animals spread on a steep slope under the trees felt like stepping into another century. The Bergamasca breed originated in the valleys around Bergamo and remains closely associated with pastoral life in Val Brembana. The shepherd spoke a broken Italian indicating he was from somewhere else. Our Italian friends hinted he might be of Balkan origin.





One of the highlights of the day was encountering a large herd of Bergamasca Sheep. Seeing roughly 1,500 animals spread on a steep slope under the trees felt like stepping into another century. The Bergamasca breed originated in the valleys around Bergamo and remains closely associated with pastoral life in Val Brembana. The shepherd spoke a broken Italian indicating he was from somewhere else. Our Italian friends hinted he might be of Balkan origin.
Resistance
A recurring theme on this hike was the difference between taking "the road" and taking "the trail."
A few of our Italian companions generally favored the obvious and established route. Suggestions to deviate from the main trail, whether by taking trail 209 through the forest or making a detour to see the dam and lake, were initially met with skepticism. Once the alternative route revealed a hidden view, an interesting landscape feature, or some unexpected beauty, enthusiasm returned.
Yet the next suggestion for a detour often triggered the same debate all over again.
Perhaps this is one of those universal hiking truths: many hikers want certainty, while others are willing to trade certainty for curiosity. On this day, curiosity won some battles but not all of them.
Rifugio Fratelli Longo
The rifugio sits at 2,026 meters in the Valle del Monte Sasso and is one of the classic destinations in the Orobie Bergamasche. The rifugio is named after Giuseppe and Innocente Longo, two Bergamasque brothers who died while climbing the Matterhorn (Val d’Aosta) in 1934.
The history of the rifugio is intertwined with that of nearby Rifugio Calvi. A mountain hut was originally constructed in this area by the CAI Bergamo section in 1923 and dedicated to the four Calvi brothers. Following damage and neglect during World War II, a larger rifugio was built elsewhere in the valley, becoming today's Rifugio Calvi. The older structure was renovated and rededicated to the Longo brothers, giving rise to the current Rifugio Fratelli Longo.
Today, Longo serves hikers traversing the western Orobie and climbers heading toward passes that connect Val Brembana with Valtellina. Despite its remote location, it remains a welcoming place for a meal and conversation. During our visit, we chatted with the manager, who mentioned her son was preparing for a trip to Los Angeles, Death Valley, and Las Vegas. Small connections like that are one reason rifugi remain special places.
Water, Dams, and Electricity
The valley above Carona looks wild today, but much of its modern appearance was shaped by hydroelectric development during the twentieth century.
Beginning in the early 1900s, the growing industrial centers of Bergamo and Milan needed electricity. The high valleys of the Orobie, with abundant snowfall (back then), steep gradients, and natural basins, were ideal for hydroelectric production. A series of dams, tunnels, reservoirs, and aqueducts were constructed throughout the area around Carona.
Lago del Prato, Lago Marcio, Lago del Diavolo, Lago Fregabolgia, Lago del Sardegnana, and other reservoirs became part of an interconnected system designed to capture and move water efficiently through the mountains. Some of the trails hikers use today originated as service roads for dam construction and maintenance. The old aqueduct section we followed on trail 258 is a reminder that much of the valley's infrastructure was built not for recreation but for moving water.
The dams dramatically altered the landscape while also preserving a visible record of twentieth-century engineering. Standing near Lago Diavolo, it is hard not to admire the ambition required to build large concrete structures in such a remote alpine environment long before modern construction equipment could be easily transported into the mountains.
Today, hikers pass through a landscape where natural and human history coexist. Alpine lakes, shepherds, and centuries-old mountain traditions share the same valley with dams, tunnels, and hydroelectric infrastructure that helped power Lombardy's industrial growth.
A Final Thought
We enjoyed this hike more than we expected. The combination of forests, reservoirs, alpine scenery, sheep, mountain history, and good food made for an excellent day in the Orobie. The route also reinforced a lesson we've learned many times: when given the choice between the road and the trail, the trail is usually the better story.




![[Apiaceae] Astrantia major [Apiaceae] Astrantia major](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi07QSiPliN7ngZ8Rk79rniOZvNTIqKeCTUfM_dhpkzfdWDaneGyrXmW2O_F9Tz2-EVTnCc77iUEM2a1Jb3Pj8ux4TFUpXuAhOgZ86ctFfnTScFEv6m-OcAmAR0QtEBLh8KQaur1ardNICKsufGWRw_XQD-0z5gtnoVENWxBSlNHV6t8L_7AZMDveydig/w200-h151/%5BApiaceae%5D%20Astrantia%20major%202.jpg)
![[Apiaceae] Astrantia major [Apiaceae] Astrantia major](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh9kuJbiCBy2smI-Ll06cVogqm_V3ooBTqHgi9G2oJ4egQYn0I2V_jGd-vkSBynn0lnFmWsSn3fCUCPB0LBNTZ_qyO_kGE-_pScBWq9ahaaqYFFAbdb7LoSaCmEFPqZlOymqq5iMeZfFVG4bTFjOTjfVuPPkPo5ZtgRaHnSLFj_FWmI9d5xkeBQvkDG5Q/w200-h151/%5BApiaceae%5D%20Astrantia%20major%203.jpg)
![[Asteraceae] Centaurea sp. [Asteraceae] Centaurea sp.](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhlhwPgHq_EncBj6Lp1oDRL6CykqXVd3pKlfSt5JdF9Waj2CYMhAYMNWp2saFHCYbPn04C2aJx9iXBcw7zNyCnOREPPLdba7_rCy3PELYygHKVlK_9qBA0CO2eMFAqj0817WGQ-HrMtYc6XmUG9vtEZeh0BakdSgbt8d2bG2iHBi5eFUqwr_K95R9_zeA/w151-h200/%5BAsteraceae%5D%20Centaurea%20sp.%203.jpg)
![[Asteraceae] Centaurea sp. [Asteraceae] Centaurea sp.](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj50E6VmMSskHrhzP6Ys5z4DRxx8h5s5tRCzM1GHdqTPrxiusxW04f-DQNXoOFFVOzFKkWxzwdLAb-knP7cvR-SfCqEtS6M4Kbg9__frbAh6Tjto4bgb5WXn3iuQ60ebmB0G5O9AJ3P_hGpdjOd9WAV2n3-VRQKZe0sjOcsID1H8J1jN2LUNTDiqRlLPA/w151-h200/%5BAsteraceae%5D%20Centaurea%20sp.%202.jpg)
.png)
.png)
%20trip.png)