G.R. No. 179673
"x x x.
To prove that the land subject of the application for registration is alienable, an applicant must establish the existence of a positive act of the government such as a presidential proclamation or an executive order; an administrative action; investigation reports of Bureau of Lands investigators; and a legislative act or statute.[9] The applicant may secure a certification from the government that the lands applied for are alienable and disposable, but the certification must show that the DENR Secretary had approved the land classification and released the land of the pubic domain as alienable and disposable, and that the land subject of the application for registration falls within the approved area per verification through survey by the PENRO or CENRO.[10] The applicant must also present a copy of the original classification of the land into alienable and disposable, as declared by the DENR Secretary or as proclaimed by the President.[11]
x x x."