An update from David late this afternoon from Pangboche to say they are on their way to Dingboche. The track has been quite icy in places making the downhills tricky. He has just informed me that there may not be any WIFI for the next three days. Very common from Dingboche up to not have access to WIFI. We may not hear from them until Gorek Shep where their phone signal will be quite strong due to a tower in the village operational for Base Camp. I will keep you updated each day as to their itinerary and what they will/should be doing if we don't hear from them.