We have hired Third Rock Adventures service for a trek to the Annapurna base camp, through Poon Hill, in Nov 2019. Great trek and great service from the agency! We asked for a guide able to tell us about the local culture and the mountains, and the agency actually delivered more than that: we trekked with a real friend who took care of us like if we were family members. One person in our group got severely sick and our guide did all the necessary so that he could receive the needed treatment, despite been up in the mountains. All we can say about the people at Third Rock Adventures is that they are gentlemen and professionals who deliver above expectations. I strongly recommend this agency!