Starting altitude: 280m. Final altitude: 1020m. . 
Signs: blue triangle in a white background
Duration: 2 – 2,5 hours.
The path leading up to Koromilia Refuge crosses the beautiful Orlias Canyon. There are several spots where you can divert out of your way and enjoy spectacular waterfalls and natural lagoons, such as the Red Rock.
After a stop at Koromilia refuge you can continue to the Petrostrougka Refuge (2-2,5 hours) via a dense forested area. If you feel like it , you can even go for the Plateau and the tops, via the E4 path.