Meet the site
The Triangle is paired with Gower Pinnacle in Pro Dive's description of Lord Howe's southern deep sites, and the two share the same account: a plateau starting in 20 m, an escarpment, a platform at 32 m and rocky canyons past 40 m. Whether that describes one structure or two adjacent ones is not clear from the source, so The Triangle is kept as its own entry, as in the first pass.
The fish life described for the pair is some of the best on the island: sharks, a school of about 30 spangled emperor, huge kingfish that followed divers throughout the dive, Meredith's angelfish, conspicuous angelfish and high-fin coralfish. Black coral trees grow on the escarpment. Kingfish in particular reach a large size here because the whole island is a marine park.
The southern end of Lord Howe beneath Mt Gower is the most exposed part of the island, taking the south-east trades and southerly swell head-on, so the Triangle is dived only on calm days or in northerly weather. The run from the lagoon is roughly half an hour.
Because most of the interest is below 20 m and the canyons go past 40 m, this is a site for deep-trained, experienced divers with careful gas planning. Divers who want to stay shallower can remain on the plateau. Its exact position and profile are not published separately, so the figures here follow Pro Dive's shared description. Confirm with the dive shop whether it is currently dived. If it is, expect it to be offered on the same calm-weather days as Gower Pinnacle.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
The Triangle is recorded as Pinnacle/Bommie in Lord Howe Island. The listed access is boat (day trip). Confirm the actual meeting point, route and permission to visit; a map pin does not establish any of these.
Topics flagged by the stored research
These are questions prompted by the existing notes, not a verified or complete hazard assessment.
- Current and timing
- Ask how the operator assesses the current window for the actual route. Historical tide notes are not a departure instruction.
- Planned depth
- Confirm the intended route and training requirements; the recorded maximum is not a target.
- Water movement
- Ask how swell and local exposure affect the proposed entry, exit and route.
Historical access notes exist for this record, but have not been independently verified for current use. Request current directions from the operator or site manager rather than following an old entry description.
Questions, answered
Is The Triangle suitable for my certification?
The record lists Deep/Advanced + experience. That does not establish suitability for every route or day. Share your training, recent experience and equipment needs with the operator and ask about the specific proposed dive.
Can I book The Triangle through YouDive?
YouDive is an independent research directory. Contact an operator directly to confirm whether it currently runs the trip, the inclusions and the booking terms.
What you might see
Kingfish, spangled emperor, sharks, Meredith's angelfish, conspicuous angelfish, high-fin coralfish, black coral trees
Location
A deep reef off the southern end of Lord Howe, dived with Gower Pinnacle; plateau from 20 m to canyons past 40 m.
Facilities nearby
Departure from the Lagoon Road boatsheds.
Before you make plans
Conditions, access and operator schedules can change. This is a location guide, not a dive plan. Ask a local operator about current conditions and suitability for your training and experience.
Sources & further reading
prodive.com.auRecord updated 26 Sept 2026. Source claims are being reviewed.