On a recent hump up and out Orderville after dropping Englestad, noticed many large limestone boulders. My friend MurrPurr, who has a geology degree herself, and I were wondering how they got there, what with the vast majority of the limestone around Zion peaking out around 3500' (the rough elevation of the Virgin River Valley as it flows from Rockville west and down off the Hurricane Bench). For reference, we were around 5500' in Orderville when we noticed them. Also noted a great deal of rounded and smoothed quartzes of varied color, some red agate too; common in Zion, but mainly found in the conglomerate layer around 4400', some 1000' down in elevation from Orderville. Not as curious as the limestone, but still interesting. Do we have much for geologists or other rock nerds here in the CC that could shed some light on the limestone boulders? I wagered glaciers in the Pleistocene, but MurrPurr did not concur.