Evidence Code § 1323
ARTICLE 12. Reputation and Statements Concerning Community History, Property Interests, and Character
Evidence of a statement concerning the boundary of land is not made inadmissible by the hearsay rule if the declarant is unavailable as a witness and had sufficient knowledge of the subject, but evidence of a statement is not admissible under this section if the statement was made under circumstances such as to indicate its lack of trustworthiness.