Ecuador

This tiny country crams in a diverse range of adventures, as well as chances to help out:

Centre for Meditation, Peace and the Resolution of Conflict

http://www.cemproc.org/ - Seeks to reduce conflict and promote global peace.

Arajuno Road project

http://www.youvolunteer.org/ - Aims to create a structured curriculum within the jungle schools of Ecuador.

Volunteering Ecuador

http://www.volunteeringecuador.org/ - Helps the most underprivileged members of society.