Is there an ancient Native American burial mound located under Dyckman St in Manhattan?

Most if not all buirial mound were constructed by digging a ditch around the mound and using material removed from the ditch to form the mound. Evidence of a ditch may help determine if a mound is man-made. Unfortunately, since the mound in question is in New York City, evidence of a ditch has long ago been obliterated. I remember reading that evidence of a Native American burial mound was found in the late 1800s and that it was verified by archaeologists before the street was paved over.