case of indigenous peoples, access to their ancestral lands and to the use and enjoyment of the natural resources found on them is closely linked to obtaining food and access to clean water. In this regard, the Committee on Economic, Social and Cultural Rights has highlighted the special vulnerability of many groups of indigenous peoples whose access to ancestral lands has been threatened and, therefore, their possibility of access to means of obtaining food and clean water. 156. See, for example, the affidavit of Richard Yegon, one of the Elders of the Endorois community. 157. In Mary and Carrie Dann v. USA , the IAcmHR noted that convening meetings with the Community 14 years after title extinguishment proceedings began constituted neither prior nor effective participation. To have a process of consent that is fully informed “requires at a minimum that all of the members of the community are fully and accurately informed of the nature and consequences of the process and provided with an effective opportunity to participate individually or as collectives.” Mary and Carrie Dann v. USA (2002). 159. The UNCERD has observed that “[a]s to the exploitation of the subsoil resources of the traditional lands of indigenous communities, the Committee observes that merely consulting these communities prior to exploiting the resources falls short of meeting the requirements set out in the Committee's general recommendation XXIII on the rights of indigenous peoples. The Committee therefore recommends that the prior informed consent of these communities be sought”. Cf. UNCERD, Consideration of Reports submitted by States Parties under Article 9 of the Convention, Concluding Observations on Ecuador (Sixty Second Session, 2003), U.N. Doc. nd CERD/C/62/CO/2, 2 June 2003, para. 16. 160. Declaration on the Right to Development , Article 3