Tham Champa Kantasilavas" in Mukdahan where suddenly Ajahns Sao and Mun spent more than 1 Pansaa together. Which now puts Ajahn Mun in 3 places at the same time. According to Wikipedia he is in Ubon, according to Mae Chee Kaeow he is in Wat Nong Nong and according to this writer he is with Ajahn Sao.
Whatever the case I have now, for now, sorted out that Ajahn SAo according to another source spent the rains retreat of 1914 at Ban Klang cave, which I may have a location for. I have visited Tham Champa Kantasilavas, which I will post soon, To me whatever the case may be is the fact that this area plays such an important part in the life's Ajahns Sao, Mun, Maha Boowa, Mae Chee Kaew and others.
I will be spending more time in the area bring you more information about Kammathana Dhutanga Buddhism and the stories of these amazing people