Decision 8 G.R. No. 201273 in the concept of owner since time immemorial or for a period of not less than 30 years; 32 and 9. no CALT may be issued over the BSF as it is within the Baguio Townsite reservation. 33 The Complaint thus seeks the nullification and cancellation of (a) OCT No. 0-CALT-37 and any derivative title issued pursuant thereto; (b) CALT No. CAR-BAG-0309-000207; and (c) the reconstructed and unapproved survey plan together with the technical description of Lot 1, SWO14110215703-D-A-NCIP.34 Only the last two reliefs emanated from Resolution No. 060-2009-AL. The Complaint also impleaded the Register of Deeds of Baguio City, the NCIP, and the LRA. To the mind of the Court, the case is not a review of the NCIP En Banc Resolution because a subsequent event occurred that gave rise to a cause of action for reversion and cancellation of a Torrens title, namely, the issuance of OCT No. 0-CALT-37. This is the reason the Republic has impleaded the Register of Deeds of Baguio City and the LRA. In fact, the Republic alleges that OCT No. 0-CALT-37 should not have been issued since it is land of the public domain. This, in tum, requires a factual determination of whether the land is indeed of public domain and whether OCT No. 0-CAL T-3 7 embraces land inside the BSF. This then raises the issue of whether a CALT may be issued over it, and whether an OCT may be issued arising from the CALT. This is therefore a a complaint for the reversion of a land to the public domain and the cancellation of a Torrens title covering a public land, both matters being within the exclusive original jurisdiction of the RTC. Under Batas Pambansa Blg. 129,35 the RTC has jurisdiction over the following civil cases: SEC. 19. Jurisdiction in Civil Cases. - Regional Trial Courts shall exercise exclusive original jurisdiction: xxxx (2) In all civil actions which involve the title to, or possession of, real property, or any interest therein, where the assessed value of the property involved exceeds Twenty thousand pesos (P20,000.00) or for civil actions in Metro Manila, where such value exceeds Fifty thousand pesos (PS0,000.00) except actions for forcible entry into and unlawful detainer of lands or buildings, original jurisdiction over which is conferred upon the 32 33 34 35 Id. at 221-224. Id. at 224-225. Id. at 227. THE JUDICIARY REORGANIZATION ACT OF 1980.