Investor Presentaiton

500.0 discussion effects of waves spatial variations: differences in wave attacks N refraction E W shore platform S 6 different directions of wave attacks for the cliff faces of the island could cause differences in the amount of erosion although the relation is not clear, attacks by high tidal waves could have affected the amount of erosion temporal variations: frequency of high tidal waves and erosion mass volume 600.0 400.0 eroded mass volume (m^3) 300.0 200.0 100.0 0.0 Jun. 10, 2014 Dec. 27, 2014 Jul. 15, 2015 Jan. 31, 2016 erosion rate volume Aug. 18, 2016 Mar. 6, 2017 . mass volume varies, 10.6 527.7 m³ per 4-7 months equivalent annual erosion rates: 0.03 0.63 m/y cf. approx. projected area of bedrock: 1,436 m² Sep. 22, 2017 Apr. 10, 2018 Oct. 27, 2018 May. 15, 2019 < Typhoon Faxai > Dec. 1, 2019 0.700 0.600 0.500 0.400 mean erosion rate (m/y) 0.300 0.200 0.100 0.000 600 500 eroded volume in a period (m³) 400 y = 5.128x+19.056 300 R2 = 0.1136 200 100 10 20 30 number of observation of waves over 3 m high 40 50

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