Notes on the Tham Luang survey หมายเหตุในการสำรวจถ้ำหลวง

It must be stressed that the Tham Luang survey is very inaccurate and cannot be used, on its own, to select drilling targets.
On the landscape scale it looks OK – Monk's Series heads towards Pha Mi, main cave follows the spine of the mountain, avens and low wet section as the southern end of the cave passes under the gorge – but the error radius for a station at the end of the cave could be hundreds of metres.

NEW BOOK: The Caves of Northern Thailand

The second volume of a new "Caves of Thailand", compiled by Martin Ellis, has been published covering the northern provinces. 

This volume has over 1,150 caves, rock shelters, stream sinks, resurgences and other sites which may be of speleological interest from the provinces of Chiang Mai, Chiang Rai, Lampang, Lamphun, Mae Hong Son, Nan, Phayao, Phrae, Sukhothai and Uttaradit. This region has Thailand's deepest caves and many of the longest caves.