The deep diving team of the Asian Cave Diving Club returned to Krabi in February. After several set-up dives Cedric Verdier and Ben Remenants reached a depth of -240m on the 18th February 2007. Caves of Northern Thailand by Pindar Sidisunthorn, Simon Gardner & Dean Smart River Books, Bangkok, Thailand 393pp ISBN 9749863135 (English version) ISBN 9749863348 (Thai version) A visit to the publisher's bookshop during November 2006 means I now have copies of both editions of this book. Though a full review will follow, a quick glance is very favourable. Half the book contains chapters on geology, biology, archaeology, cave photography, cave exploration, etc. while the second part of the book is packed with good colour pictures and short descriptions of more than 100 caves many of which are not in the 1995 Caves of Thailand book. The appendices give details of cave locations, lengths and references. My only complaint, as a surveyor, is the lack of any detailed cave surveys or location maps. The editing of the book isn't as good as it could be. The book has been reviewed in Descent (No. 193) and in the NSS News. The English edition is hardback and the Thai edition softback. From the publisher's bookshop the price is 1,395 THB for the English edition and 995 THB for the Thai. The publisher's catalogue price is US$35. According to the Descent review the book is distributed in the UK by Thames & Hudson at £25. However, it is listed on the Amazon website at a discounted price of £11.98 (full price £16.95), but with a 1 month delivery time.