This stirring couplet, found today in Louisville's Calvary Cemetery, is one of the most fascinatingly ominous and enigmatic I believe I've ever encountered on a gravestone:
Up one more ridge...
And down the hollow
And you must follow.
All at once, I'm reminded of H.P. Lovecraft, Children of the Corn, W.B Yeats' "The Second Coming", and any number of "Southern Gothic" novels.
The grave is that of one John L. Olges, Jr., so presumably he is the "J.O." that authored his own epitaph.