The study estimated the direct and indirect use value and explored the option value. The combined annual use value is estimated to be P 510 million. The direct use value is roughly two-thirds while the indirect use value is a third. Mining generates around 55% of the direct use value and carbonr sequestration represents around 85% of the indirect use value. Together, mining and carbon sequestration account for two thirds of the use value. The option value is considered to be substantial, but no quantitative estimate could be made as part of this study. Below, the main findings for each value component are summarised.