Sand by PJ · Published January 21, 2014 · Updated December 23, 2016 Marvelously complex mix of shells and many types of stone worn to this size that allows a complex interaction with the waves – appropriately used for measuring time in a glass.
0 The San Marcos Project Team April 8, 2014 by PJ · Published April 8, 2014 · Last modified December 23, 2016
