Economic and Environmental Geology

Fig. 4.

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Fig. 4. Rockfall occurrence at Pohang Daljeon-ri columnar joint (a-b: location and image of large-scale rockfall captured by BTC-6PXD camera, c-d: debris flow moved from the northeast boundary slope, e-f: pillars of columnar joints that have recently fallen.
Econ. Environ. Geol. 2022;55:497-510 https://doi.org/10.9719/EEG.2022.55.5.497
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