Rebecca Mulley and Mark Richardson from Gifford have arrived in Mafèlè, Mali, to build a barrage across the Woni river, which borders Ivory Coast.
Work has begun in earnest, and is progressing well. The temperature is soaring, but the local people say it will get much hotter.
Read the latest from the Gifford pair - Rebecca's first blog, for the third week the pair have been in Mafèlè here.
Read Mark's blog from the second week here.
Read Mark's blog from the first week here.