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Argillite Rock formations. The rocks seen in the middle of the Lockatong Creek, that look stacked on top of one another, are argillite. Argillite is a rock composed mainly of clay-sized particles, which has been lithified (hardened) to a greater degree than shale (Beckstead). The Lenni Lenape Indians had settlements in this area and took pride in Argillite found in the streambed. The Lenape would strike these stones at acute angles against other stones to fashion tools and weapons.

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Photographs by Valerie Lykes and Janine Ngai