A typical small cone below.  This one has a typical apex angle.
small 2 inch cone

A typical medium sized cone.  This one has a narrow apex angle.
embedded 5 inch cone

This medium to large cone in the overhang face was concealed until a piece of overhang
fell away.  The hat on the slab above places this one at about eight inches long.
embedded 8 inch cone

This large cone, at 14 to 18 inches will probably not remain intact as it weathers out.
Only rarely will large cones weather out in one piece.  Notice the internal structure
of nested hematite cones, best seen in these larger cones.
large embedded cone