All trekking requires current permit and guide checks; restricted-area permits apply to Upper Mustang and other zones. Altitude illness, weather-grounded flights, road closures and evacuation insurance are major planning factors. Do not promise wildlife sightings. Extensive Nepal cultural, pilgrimage, mountain and wildlife catalogue spanning Kathmandu Valley, central hill towns, Pokhara, Annapurna, Everest, Langtang, eastern tea country, western heritage and lowland national parks. Trekking is specialist-led with permits, altitude management and weather plans.