By Aaron Addison

As international teams of cavers enter the 10th year of documenting lava tubes and pit crater features in the Galapagos Islands, significant new discoveries are still being made. In August 2019, locals guided a small team to a new tube system that has now been surveyed over 4 km. Survey totals from the March 2020 expedition have now revealed that Sistema Silvana is now the longest known lava tube in South America.

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