Members are reminded that DNHG field trips are cooperative ventures among the participants, organized for their mutual benefit and enjoyment. DNHG field trip leaders are not normally professionals or experts, but fellow members who have agreed to share their time and knowledge with other participants, on a volunteer basis. The relationship of trip leaders and participants is that of co-venturers, not professional and client. For these reasons field trip participation is limited to DNHG members and their bona fide non-resident guests. Various risks are inherent in travel in and around the UAE and in the exploration of the natural environment, whether by automobile, by boat, on foot or otherwise, and whether on-road or off-road. By participating in DNHG field trips, members and their guests accept these risks, and they accept responsibility for their own safety and welfare. Field trip participants may be required to sign an express waiver to this effect. Without these understandings, the DNHG would be unable to sponsor field trips or to recruit volunteers to lead them.