NaturePhotography.US Trip Grading System
Grade 1 Touring by van, train, helicopter, boat, with short walks or easy hikes (with option of extending the hikes further).

Comfortable lodging at hotels, resorts, lodges – can be combination of fully developed near or in towns, to rustic and remote with in-room facilities.

Grade 2 Any of the above with moderate walks/hikes on uneven and/or slippery terrain, significant steps (like cultural sites), limited trail facilities.  Optional kayaking, snorkeling, caving and caving by canoe, forest canopy activities, etc.  Could include vehicle transport over high passes or limited activity at altitude, and possibility of temperature extremes.

Comfortable lodging at hotels, resorts, lodges – can be combination of fully developed near or in towns, to rustic and remote with in-room facilities.

Grade 3 Special adventures, such as trekking, camping, technical caving, tree climbing.