Event Detail


Boat Field trip to Nine Pin Islands & HK Geopark including a hike into Mok Min Sea Cave

Professor Jed Kaplan
Sunday, 28 Apr 2024
Nine Pins
The Royal Geographical Society is delighted to welcome back Professor Jed Kaplan to lead this boat excursion to the beautiful and inaccessible Nine Pin Islands and UNESCO Hong Kong Geopark.

The Nine Pin Islands are the most spectacular development of columnar hexagonal jointing in the world. The boat trip sails through attractive scenery and then open seas to the islands, first visits North Nine Pin Island to see the beautifully developed hexagonal columns.  The second visit is to South Nine Pin Island to see a sea arch that has developed along a fault.   

The trip proceeds to Basalt Island in the Hong Kong Geopark, to view the spectacular cliff scenery, including spectacular hexagonal columns.

From 28-30 April is the High Island Tin Hau Festival. A series of celebrations including Cantonese Opera, the inauguration of the altar, and a sea parade are being held. After visiting the Nine Pins our boat stops at the Yau Ley restaurant on High Island, where a special vegetarian lunch is provided. 

This is followed by the opportunity to hike through fabulous scenery to the magnificent Mok Min Sea Cave, which Members are able to enter.

Following the hike, our boat sails back to Central, viewing more of the rocks of the islands of the Geopark, which erupted about 140 million years ago, a time when dinosaurs roamed the world.  It is estimated that approximately 70 cubic km of rubble erupted during this single event, five times more than the famous Krakatau eruption of 1883, which dispersed haze all over the world.

Timings:          Meet at Central Ferry Pier:                         9 am
                        Arrive at Central Ferry Pier:                       6 pm 

Cost:                $880 for Members and $980 for Members’ guests,
                        including boat ride, guided hike and a special vegetarian lunch 

Please register by clicking the link above. Please email to This email address is being protected from spambots. You need JavaScript enabled to view it. if you wish to book more than 4 places. Detailed joining instructions are to be sent out before the event.


Professor Jed Kaplan studied Geography and Earth Sciences at Dartmouth College, USA, and received his PhD in Plant Ecology from Lund University, Sweden.  He subsequently held several postdoctoral fellowships.  Later, he held Professorships at the Universities of Geneva and Lausanne, Switzerland, supported by the European Research Council.  Prof Kaplan was a Senior Research Fellow in the Environmental Change Institute, University of Oxford, and is currently a Professor at the University of Calgary.  He has published more than 100 articles in major international journals,  including Science and Natures, and is recognised as an expert in interdisciplinary global environmental history.  He is currently editor-in-chief of the journal Global and Planetary Change.

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