Julie Speidel’s erratics are haunting 3-D images of massive stones once supported and transported here by ice (“Local sculptor draws on geology as her works dot the country,” Nov. 12). Those objects and her metallic visions of them are now resting on warm ground that is becoming warmer.

The ice has receded, slowly at first, over thousands of years, then in recent decades at a pace unprecedented in geologic history.

Let’s hope her creations become widely accepted and installed, and that we all get the message in time. If not, well, at least the erratics, hers and the originals, will be here — just underwater.

— Mike Sasnett