via The Nation, 15 March 2019: A little late, but still important. My friend Phacharapon Phanomvan quoted in The Nation on the plans to drill oil in Si Thep.
Vaster than ancient Ayutthaya and perhaps just as important in its day, Si Thep in Phetchabun has begun sharing its secrets. it also sits on an oil field
Source: A race to save the past