Bilar Man-Made Forest

Overview

The Bilar Man-Made Forest stretches approximately two kilometres along the Loay–Bilar road, forming a cathedral-like tunnel of mahogany (Swietenia macrophylla) that has become one of the most photographed roadside features in Bohol. The wider reforestation effort was formally launched in December 1953 as the Loboc Watershed Reforestation Project (LWRP), continuing a plan begun under Bohol governor Conrado Marapao in 1947; full implementation followed in April 1958 under forester Hipolito Amihan, based at a central nursery in Cambuyo, Garcia Hernandez. The mass planting drive that produced the tree tunnel seen today is consistently dated later across sources: local students, scouts, and government volunteers planted the bulk of the mahogany saplings between 1968 and the late 1970s, drawing seedlings from a nursery in Barangay Riverside, Bilar, across eroded hillsides between Loboc and Bilar towns. The uniform rows produce a symmetry unusual in natural forests, and the dense canopy can lower ambient temperature by 5–10 degrees Celsius compared to the open road.

Ecologically, the forest is a monoculture plantation of a non-native species. Mahogany originates in Central and South America and was introduced across Southeast Asia for timber production and erosion control. The acidic leaf litter suppresses native undergrowth, which explains the relatively clear forest floor and the lower bird and insect diversity compared to adjacent dipterocarp forests in the Rajah Sikatuna Protected Landscape. The forest does provide meaningful carbon sequestration and continues its original function of stabilising the hillside soils.

Within the tree line, the Bilar Ecopark operates a small network of walking trails with educational panels on reforestation, local ecology, and conservation. Tree identification markers are placed along the main trail. The ecopark entrance is free; independent exploration is permitted without a guide.

Location

The forest lies along the main Loboc–Bilar road, administratively within Bilar municipality, Bohol province. It sits roughly midway between Loboc town proper and the turn-off toward the Chocolate Hills viewing decks in Carmen. The Philippine Tarsier Sanctuary in Corella is about 15 minutes by road to the west; the Chocolate Hills Complex is approximately 45 minutes further north-east.

Getting There

From Tagbilaran City: approximately 1 hour by road via the Loboc highway. From Panglao Island: approximately 1.5 hours. Most countryside tour vans include the forest as a transit stop between Loboc River and the Chocolate Hills. By motorcycle rental (₱400–800/day) the forest is easy to reach independently along well-maintained provincial roads. There is no dedicated jeepney route; travellers without private transport typically join a half-day or full-day countryside tour.

No entrance fee for roadside access, per the sources this entry originally drew on. However, a January 2020 news report states that the Provincial Environment and Natural Resources Office (PENRO) began collecting an environmental fee at the man-made forest — PHP 30 for local visitors and PHP 100 for foreign visitors — under DENR Administrative Order 2016-24, formally adopted by the Protected Area Management Board in June 2019 and covering the Loboc Watershed Forest Reserve (which encompasses the man-made forest). Within days, PENRO officer Charlie Fabre placed collection “on hold” after negative feedback from residents and tour operators, pending a stakeholder meeting; that report did not give a fixed resumption date. A later, September 2023 report quotes PENRO officer Ariel Rica saying the P30 user’s fee would still be carried out “as mandated by law,” but that collection would not resume until a proper visitor facility (comfort rooms, parking) was built at the site, with proceeds to be split 25% national government / 75% protected-area maintenance — implying the fee had still not resumed as of that date. This directly contradicts the “no entrance fee” claim above; both are presented here rather than silently resolved, since it remains unclear whether collection has since started. [FACT NEEDED: current 2026 status of this fee — whether it is now actually being collected at the roadside or ecopark entrance, given the September 2023 report indicated collection was still contingent on facility construction that had not yet happened.] The Bilar Ecopark, set back from the road, is described elsewhere as free to enter — this may or may not be affected by the same PENRO fee. No official opening hours were located — the road and ecopark are accessible during daylight. No guide required for trail walks, though ecopark staff may be present on weekdays. The main road is two-lane and carries through-traffic; pulling completely off the road surface before stopping for photographs is necessary. Morning visits (7–9 AM) offer the least traffic and the best diffuse light for photography. Late afternoon (4–5 PM) produces angled light with longer shadows.

What to Expect

The two-kilometre tunnel effect is the central experience: an overhead canopy of mahogany branches arching across the road, with filtered light reaching the tarmac in patches. Driving or riding through takes under five minutes; walking the road shoulder takes 20–30 minutes. The Bilar Ecopark trails add another 30–45 minutes for the main loop. The forest floor is relatively open due to the mahogany’s acidic litter — there is little dense undergrowth. Bird activity is present but sparse compared to the adjacent Rajah Sikatuna Protected Landscape. The source narrative’s mention of black coral (antipathes) at 35–45 m depth does not belong to this entry: no underwater feature is associated with this land-based forest. “Black Forest” is a distinct scuba dive site off the eastern side of Balicasag Island near Panglao, named for its black coral colonies at comparable depths — the two “forests” share only a name, and the depth/coral detail was evidently miscopied from that dive site into this land-based attraction’s source material.

Notes

Source: scraped article from 01-brain/library/older_files_to process/20260604-bohol-html/attractions/bilar-man-made-forest.md. Source is a modernised article, not a primary government or academic document — specific claims (5–10°C temperature drop, two-kilometre length) appear consistent across multiple secondary sources but are unverified against primary records.

2026-07-28 research pass: the prior pass’s “exact year reforestation began” gap was retried with a different angle — searching for the project by name and for individuals involved (“Loboc Watershed Reforestation Project” history; “Hipolito Amihan” forester Cambuyo nursery) rather than repeating generic “Bilar man-made forest history” searches. This surfaced a specific, internally consistent timeline (Governor Conrado Marapao’s 1947 plan → LWRP formally launched December 1953 → full implementation April 1958 under forester Hipolito Amihan → mass volunteer planting 1968–late 1970s) repeated near-identically across several independent travel/history blogs (steemit.com/@markos20, visit-bohol.blogspot.com, thedailyroar.com, richestph.com, suroy.ph), suggesting a shared underlying local-history source, though still no primary DENR/CENRO/LGU document was located to verify it directly. Given the consistency and specificity (named governor, named forester, named nursery barangays), this has been written into the Overview in place of the vague “1960s” claim, but it remains secondary-sourced, not primary-verified.

Also resolved this pass: the “black coral at 35–45 m” detail in “What to Expect” was confirmed to be contamination from an unrelated dive site. “Black Forest” is a documented scuba site off Balicasag Island (Panglao) at comparable depths and coral type — a plausible source of the copy-paste mixup. The land-based Bilar Man-Made Forest has no underwater feature.

Not resolved this pass: current (2026) status of the PENRO/DENR environmental fee. Fresh search (rather than repeating the 2020-only search from the original draft) turned up a September 2023 Bohol Chronicle follow-up report (via search snippet; the live page returned HTTP 404/403 on direct fetch, so it could not be read in full — the finding is included with that caveat) indicating the fee had still not resumed as of that date, pending construction of a visitor facility. No source dated 2024, 2025, or 2026 was found confirming either resumption or continued non-collection. Current-year (2026) travel-guide/listicle pages (Trip.com, TakeYourBackpack, TripAdvisor “2026” listings) uniformly state “no entrance fee,” but these read as generic, non-primary, non-dated content of exactly the kind flagged as unreliable for this task, so they were not used to close the tag. A February 2026 Bohol Tribune article on “alleged corruption in environmental fee collection” in Bohol was checked on the chance it referenced this site — it did not; it concerns Virgin Island, Panglao, a different location. The tag is left in place.

• PENRO confirms collection of entrance fee at Bilar man-made forest, accessed 2026-07-17.
• DENR suspends entrance fee collection to Bohol’s man-made forest — Inquirer, accessed 2026-07-28.
• DENR: ‘User’s fee’ to be imposed at Bilar man-made forest — Bohol Chronicle, accessed 2026-07-28 (found via search index; direct page fetch failed, content taken from search snippet only).
• Visit BOHOL: Bilar: Man-made Forest, accessed 2026-07-28 — reforestation project timeline (LWRP 1947/1953/1958, planting 1968–late 1970s).
• Black Forest dive site — Zentacle, accessed 2026-07-28 — confirms Black Forest is a Balicasag Island dive site, unrelated to the land-based Bilar forest.