Figure 1

Variation in unconfined compressive strength at different heights in (a) an abandoned and (b) six occupied termite mounds at different heights. Error bars in (a) represent standard deviation. (b) Boxplots represent strength of core and buttress at 0.9 m and 1.2 m from the base of the mound. Box plots with horizontal lines indicating median, bottom and top of the box indicating 25th and 75th percentiles respectively, and whiskers indicating either the maximum value or 1.5 times the inter-quartile range, whichever is smaller. n represents sample size.