THIRD ROCK is incredible, and I couldn't more strongly recommend using them for any trekking adventure. They were incredibly competent, helpful, responsive, knowledgeable, safe and fun start to finish. It was so easy and helpful to discuss with them options and organizing just the right trip for us. They were both highly professional and as friendly as could be, welcoming us and sending us off to/from Katmandu, and in all transit within Nepal. And I am still amazed how easy and fun it was to trek to base camp with Shiva (guide) and Gopal (porter). Their professionalism, support, knowledge and companionship added so much to the natural beauty around us. Not only were they flawless in ensuring our safety and health and guiding us through the trek, they continuously added the color, information, and interesting history of the mountains and the culture we were passing through. And they were both courteous and totally fun. If you are looking for a safe, problem-free, flawless, and mind blowing trip within or around the Himalayas, you really must go with 3rd Rock.