Eloi Coly has worked on the island for 26 years as a site manager.

CNN: Senegal's scenic island exposes horrors of slave trade

It is potentially a disaster for Pfizer's partner, Coley Pharmaceutical (nasdaq: COLY - news - people ) of Wellesley, Mass.

FORBES: Pfizer Stops Developing Coley Cancer Drug

The conditions were so appalling and unsanitary that a major epidemic that ravaged the island in the 18th century started in these rooms, Coly said.

CNN: Senegal's scenic island exposes horrors of slave trade

Coming into squad are former national captain Aliou Cisse and Ferdinand Coly, who last played for his country at the 2004 African Cup of Nations finals in Tunisia.

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He is also the chief curator of the "House of Slaves, " built by the Dutch in 1776, and is the last slave house remaining on the island and Coly has painstakingly preserved its history.

CNN: Senegal's scenic island exposes horrors of slave trade