4star South America Offering escorted tours, custom groups, agricultural, and incentive travel to Argentina, Brazil, Chile, and Peru, including Patagonia and the Amazon. http://www.4starSouthAmerica.com/

Acute Angling Guided trips to South American destinations for Peacock Bass and other exotic freshwater species. http://www.AcuteAngling.com/

Adventure Tours Argentina Chile Offers multisport adventure travel to Patagonia, South America. Tours include skiing, snowboarding, fly-fishing, horseback riding, whitewater rafting, and hiking in the Andes. http://www.adventure-tours-south.com/

Adventures on Skis Offers skiing, biking, hiking, equestrian, and other outdoor vacations in the Alps, Europe, South America, and the Rockies. http://www.adventuresonskis.com/

Amazon Adventures Offering classic and unique jungle adventures in Peru, Brazil, Ecuador, and Venezuela. http://www.amazonadventures.com/

Amazon Nut Safaris Offers safaris to the Amazon region including jungle tours, canoe trips and game fishing. http://www.amazon-safaris.com/

Amazonas Explorer Rafting and canoeing in Peru, Bolivia and Chile. http://www.amazonas-explorer.com/

Andean Treks Adventure travel and hiking tours in Machu Picchu, Argentina, Patagonia, the Amazon, Galapagos, Peru, Ecuador, and Chile. http://www.andeantreks.com/

Andes Operates trekking, climbing, mountaineering, and skiing expeditions to South America from Britain. http://www.andes.org.uk/

Andes Adventures Trekking and running adventures in Peru. http://www.andesadventures.com/

Andes Mountain Expediciones Offering guided trekking and climbing expeditions to Aconcagua, Cordillera Blanca, and Torres del Paine. http://www.andesmountain.cl/

Archaeological Conservancy Tours Tours to archaeological sites in the American Southwest, Central America, and Mexico ranging from four days to two weeks. http://www.americanarchaeology.com/

Arjona Tours Specialized in tourism in Venezuela to Los Roques, Gran Sabana, Amazonas and Los Llanos; snorkeling, windsurfing, fishing and beach sports are organized. http://www.roques.net/

Behind The Scenes Adventures (BTSA) Tours exploring archaeological sites, festivals, and weavers' and artisans' villages throughout South America and Southeast Asia. http://www.btsadventures.com/

Boojum Expeditions Adventure travel and horeback tours for small groups to Mongolia, Tibet, China, Argentina, Venezuela, and Yellowstone National Park. http://www.boojumx.com/

Cazenove & Loyd Offers safaris to South and East Africa. http://www.caz-loyd.com/

Chachapoyas Tours Offering expeditions to Gran Vilaya, Laguna de los Condores, Fortress Kuelap, and more. http://www.kuelapperu.com/

Dragon's Path Cultural Walking Adventures Offers small group guided walking, hiking, and trekking vacations and tours in Europe, Asia, and the Americas. http://www.thedragonspath.com/

Earthbound Adventures Environmentally conscious journeys to South America. http://www.earthboundadventures.com/

Eco Voyager, Inc Specializes in ecological and cultural soft adventures to Chile, Costa Rica, Peru, Ecuador, and Venezuela. http://www.ecovoyager.com/