Variable: mark-ring-max
mark-ring-max is a customizable variable defined in simple.el.gz.
Value
16
Documentation
Maximum size of mark ring. Start discarding off end if gets this big.
Source Code
;; Defined in /usr/src/emacs/lisp/simple.el.gz
(defcustom mark-ring-max 16
"Maximum size of mark ring. Start discarding off end if gets this big."
:type 'natnum
:group 'editing-basics)