| There were signs of previous glaciation in the form of erratics and many examples of polishing and grooving. |
| The boulders were transported by ice from granite outcrops elsewhere and are referred to as erratics. |
| In the absence of other sources of building stone, glacial erratics have been extensively used in Finland and northern Poland. |
| Large erratics line the river and lakes from the headwaters to Irving Lake. |
| I stayed off the glacier, stumbling down the left moraine, often catching myself with my arms just before slamming into glacial erratics. |
| Huge glacial erratics, boulders unlike most of the other rocks in their surroundings, stand in mute testimony to their cross-country transport by advancing ice. |
