Until recently creeping eruption was seen rarely in Switzerland. With the increase in tourism, in particular to East Africa, isolated cases have been seen in this country in recent years. This study describes an outbreak of epidemic proportions in a group of 24 young men after an organized group travel to Kenya. Hands and feet only were affected by characteristic lesions but the larva migrans could not be found in any of those affected, a commonly encountered difficulty. It appeared most likely that the larvae had entered the feet via sea sand and the hands during the riding of two horses shared by the group. There was no evidence of direct skin to skin transmission. There was a good therapeutic response to topical to γ-hexachlorcyclohexan 1% in an ointment base.