Then on to Djenne, Mali, an old walled city constructed entirely of banco - or mud. Every year all buildings including the huge central mosque have to be patched, otherwise they gradually wash away. From here we took a three day pirogue (a long boat punted along with poles) trip to Mopti. Mali was hot. Its always hot - especially mid-afternoon, and you constantly have to drink. You sweat all the time, but do not notice it as it dries immediately.