| The most recent and public difference of opinion over sacredness occurred just this summer, and it concerned a substance called pipestone. |
| Various analyses of numerous Havana Hopewell platform pipes from Illinois revealed most to be made of Elkhorn Creek pipestone. |
| A few days later two solitary teepees stood on the shore of the pond, under the red cliffs of the pipestone Quarry. |
| This crossing had been for generations the fording place of the red peoples in their pilgrimages to the pipestone quarry. |
| They are chiefly made of a soft stone something like the pipestone used by the present Indians which approaches soapstone. |
| After passing the pipestone falls, we entered country new to us, where the valley became much wider. |
