CREATE TABLE table_36684 ("Name" TEXT, "Number" TEXT, "Namesake" TEXT, "Albedo feature name" TEXT, "Area" TEXT, "Current map" TEXT)

What is the current map designation of the feature which was named for discovery rupes?
SELECT "Current map" FROM table_36684 WHERE "Namesake" = 'discovery rupes'
SELECT "Current map" FROM "table_36684" WHERE "Namesake" = 'discovery rupes'