We set off along the main south coast road for today’s main destination, the To Sua Trench, which is about 50 kilometres east of the resort. The lack of sign posts trips us up as usual and we find ourselves at a dead end in the middle of a village in the pouring rain. Undaunted, we do a quick U-turn, wave vigorously to some bemused villagers whilst we look keenly at their houses in the vain hope that they’ll think that we came here on purpose, and head on our way again. We’ve read that the trench is really two trenches, both of which are large holes in the lava, and they are connected to each other and to the sea by lava tubes. The larger of the two trenches, which is the one directly connected
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