This still active cemetery is on the east side of the South Amenia Road (CR2), 1/2 way between Amenia Union and South Amenia.  It is just north of Clark Hill Rd.  The first picture is taken toward CR2 (running left-right thru picture, in front of house).  The second is of the South Amenia Church, Presbyterian of Union Society  est 1759, which is the closest church.  I imagine that the graveyard is operated by the church.

From Poucher Book,
"INSCRIPTIONS: 427 in number. Copied by L. Van Alstyne of Sharon, Conn. See page 128 of "Burying Grounds of Sharon. Coon., Amenia and North East, New York", printed 1903.
REMARKS: Known as South Amenia Cemetery. When the Round Top Meeting House at Amenia Union was torn down in 1786 a new church was built at this point. The second building was followed by a third, called the "New Church of South Amenia". Some stones in this yard bear dates prior to 1786, which probably indicates removal from other places.

Examples:
-  KILPATRICK, Mr. Robert, a native of Scotland, d. Oct. 8, 1787, ae. about 70. Speaks of his generous bequest of 100 pounds for the support of the Presbyterian Congregation in the town of Amenia, formerly under the Pastoral care of the Rev. Mr.. Ebenezer Knibloe.
- GRANT, William, fourth s. of James and Theodosia, b. at Dover, Aug. 19, 1811, d. Dec. 8, 1830, on his passage from New York to Charleston, S. C., and was buried at Sea. A member of the Senior Class in Yale College.