Last week did this beautiful combo trek through the Annapurna circuit and to the base camp of Annapurna. The main rewards are the gorgeous landscape and amazing mountain views. Crossing Cross Thorung La Pass was most demanding part of this trek. But if you are with an experienced guide, there's no mountain passes you can't cross. I loved the idea of going with guides like Dol, who is friendly, has local knowledge and good connection with people of the Annapurna region. It's a bonus you get.