Ключевые слова: adventure, alone, app, autumn, backpack, checking, communication, destination, direction, directional sign, distance marker, equipment, exploration, explorer, fall, female, fog, forest, global positioning system, gps, guide, hiking, internet, location, lost, mobile app, mobile phone, nature, navigation, navigational, outdoor, outdoors, people, person, phone, position, searching, signal, smart phone, smartphone, symbol, tourist, trail, travel, trekking, using phone, woman, worried,