Trips where a "carry in, carry out" policy may be observed

• Trips to support conservation
• Trips for nature lovers
• Safaris without guns, say
• Trips through rain forests, maybe
• Environmentalists' excursions
• Bed for us at rear of office, conserving holidays
• Trips to wildlife areas, say
• Nature excursions

Wiktionary Word definitions in Wiktionary
n. (plural of ecotour English)