1) The first pic is probably of the tree that features in the movie "The God must be crazy 2" - a very funny movie. (Maybe available on Youtube. Search the Internet for the whole series.)

2) the tree at Kanchanaburi may be over 100 years old (rings of a lower branch can tell a lot of stories, But please don't take sample from the main trunk!)

3) a good news (but sadly from our neighbour country. Thailand government has yet to show a Green National Agenda. Coal-fired power plants - at Krabi and Songkhla - are very much anti-green agenda.)

Laos Going Green, Aims to Plant 20 Million Saplings
https://www.laotiantimes.com/
...In a commendable effort to restore 70 percent of forest coverage by 2020, the Ministry of Agriculture and Forestry aims to farm over 20,000 ha... In prior years, Vientiane has planted over 2.7 million seedlings on nearly 400 hectares, with an estimated 90 percent survival rate.

Cheer!