The Temple Institute: In-Depth Temple Study: The Cups and Small Holes
 
The Cups and Small Holes

Two small cups were located on top of the mizbeach, next to the horn on the southwest corner. These cups were used to receive the libations. The wine libation was poured into one of the cups, and this was done daily at the completion of the sacrifice of the burnt and peace offerings. The other cup was for the water libation which was done during the Sukkot festival. Near the cups a pile of salt was kept, used for salting the libations and for the meal-offerings before their sacrifice. (Alternate view.) 
Contents:   Part I,    Part II,    Part III,    Part IV,    Part V,    Part VI,    Part VII