Joshua 4:3
3 and command them, saying, ‘Take vtwelve stones from here out of the midst of the Jordan, from the very place wwhere the priests’ feet stood firmly, and bring them over with you and lay them down in xthe place where you lodge tonight.’”
Joshua 4:9
9 And Joshua set up1 twelve stones in the midst of the Jordan, bin the place where the feet of the priests bearing the ark of the covenant had stood; and they are there to this day.