From 1946 to 1949, one of the Scoutmasters of the four provisional summer camp troops was Mr. Fred Hedebol, a science teacher at Nott Terrace High School in Schenectady. Some people still remember the fine Nature Trail he developed at Camp Boyhaven, but most of the details have been lost. Only the oldest detail remains: a group of fossils.

These fossils are the petrified remains of a plant called "cryptozoons" which grew in salt water. Imagine a bed of cabbages growing very close together, over which was deposited a very fine sand which, over millions of years, hardened into limestone. The shapes of the plants were impressed in the limestone and, when the Ice Age glaciers planed down the rocks, the cross-sections of the cryptozoons were revealed. These fossils can be found in a layer of rock which extends along this side of the Kaydeross Creek. The age of the rocks which contain the cryptozoon fossils is estimated to be 500 million years. These plants, therefore, grew during the Cambrian Geologic Age, long before fish or clams developed!