among great shards of rocky clitter

The next day began at sunrise with a stroll among great shards of rocky clitter. Some, Philie explained, were large chunks of granite and broken bedrock (relics from glaciation during the last Ice Age); others were examples of impactite, formed as a result of melting during impact. The latter were ink black and covered with tiny holes, evidence from when the minerals within liquified and bubbled during the heat and pressure of the collision.