HOA BINH PROVINCE
A new area to visit which, from the maps we had, looked very exciting. a linear block of limestone over 80km long and 20km wide with many sinks marked on the plateau which lay above 800m. Unfortunately the limestone was thinly bedded and very little cave development found. Of those that were found the rock was generally poor and brittle and nearly led to a serious accident for one team member when a ledge collapsed under him. A smaller block of limestone to the north east of the main block did yield a significant cave, over 3km long in a 2km² block.