At the moment, there are about 50 people out in the terrain to help with the search, a strength that will now be even greater when missing people join.
Police say they do not yet know how long their search will last, only that they will continue as long as it feels meaningful.
Cold and rainy
Even though it has now been four days since the man was seen, there is still hope of finding him alive.
It has rained and been quite cold, what does the assessment look like for the man?
-It is included in the calculations that are made linked to when we will phase out the effort, but at the moment we still think it makes sense, says Peter Darwish.