Hotter Than Expected

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Since the team was able to work around and assess the possible problems that could rise up with the borehole until then, they were expecting to be able to get further down. But after 10,000 feet, there was a huge obstacle that needed to be fixed. The drilling team was getting very close to reaching their target but soon realized that the hole had heated up to about 180 °C (356 °F) –  which was 80 °C (176 °F) hotter than expected.