diff --git a/index.js b/index.js
index 2ad67c7..9188e29 100644
--- a/index.js
+++ b/index.js
@@ -160,6 +160,11 @@ function cleanWKT(wkt) {
 }
 export default function(wkt) {
   var lisp = parser(wkt);
+  // if compound SRS (e.g. COMPD_CS) parse only the PROJCS part (e.g. horizontal SRS)
+  if (lisp[0] == "COMPD_CS") {
+    console.warn('COMPD_CS not yet supported. Stripped Vertical datum leaving only PROJCS');
+    lisp = lisp[2];
+  }
   var type = lisp.shift();
   var name = lisp.shift();
   lisp.unshift(['name', name]);
diff --git a/parser.js b/parser.js
index d7f14b1..0de7b9f 100644
--- a/parser.js
+++ b/parser.js
@@ -8,7 +8,7 @@ var AFTERQUOTE = 5;
 var ENDED = -1;
 var whitespace = /\s/;
 var latin = /[A-Za-z]/;
-var keyword = /[A-Za-z84]/;
+var keyword = /[_A-Za-z84]/;
 var endThings = /[,\]]/;
 var digets = /[\d\.E\-\+]/;
 // const ignoredChar = /[\s_\-\/\(\)]/g;
diff --git a/test-fixtures.json b/test-fixtures.json
index fb5a988..f7f9207 100644
--- a/test-fixtures.json
+++ b/test-fixtures.json
@@ -388,4 +388,77 @@
     "lat2": 0.7280931862903012,
     "srsCode": "NAD83 / Massachusetts Mainland"
   }
+}, {
+  "code": "COMPD_CS[\"GCS_WGS_1984\",PROJCS[\"WGS 84 / UTM zone 30N\",GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS 84\",6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],AUTHORITY[\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"4326\"]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"latitude_of_origin\",0],PARAMETER[\"central_meridian\",-3],PARAMETER[\"scale_factor\",0.9996],PARAMETER[\"false_easting\",500000],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"32630\"]],VERT_CS[\"unknown\",VERT_DATUM[\"unknown\",2005],UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]],AXIS[\"Up\",UP]]]",
+  "intermediate": [],
+  "value": {
+    "type": "PROJCS",
+    "name": "WGS 84 / UTM zone 30N",
+    "GEOGCS": {
+      "name": "WGS 84",
+      "DATUM": {
+        "name": "WGS_1984",
+        "SPHEROID": {
+          "name": "WGS 84",
+          "a": 6378137,
+          "rf": 298.257223563,
+          "AUTHORITY": {
+            "EPSG": "7030"
+          }
+        },
+        "AUTHORITY": {
+          "EPSG": "6326"
+        }
+      },
+      "PRIMEM": {
+        "name": "greenwich",
+        "convert": 0,
+        "AUTHORITY": {
+          "EPSG": "8901"
+        }
+      },
+      "UNIT": {
+        "name": "degree",
+        "convert": 0.0174532925199433,
+        "AUTHORITY": {
+          "EPSG": "9122"
+        }
+      },
+      "AUTHORITY": {
+        "EPSG": "4326"
+      }
+    },
+    "PROJECTION": "Transverse_Mercator",
+    "latitude_of_origin": 0,
+    "central_meridian": -3,
+    "scale_factor": 0.9996,
+    "false_easting": 500000,
+    "false_northing": 0,
+    "UNIT": {
+      "name": "metre",
+      "convert": 1,
+      "AUTHORITY": {
+        "EPSG": "9001"
+      }
+    },
+    "AXIS": {
+      "Northing": "NORTH"
+    },
+    "AUTHORITY": {
+      "EPSG": "32630"
+    },
+    "projName": "Transverse_Mercator",
+    "units": "meter",
+    "to_meter": 1,
+    "datumCode": "wgs84",
+    "ellps": "WGS 84",
+    "a": 6378137,
+    "rf": 298.257223563,
+    "k0": 0.9996,
+    "x0": 500000,
+    "y0": 0,
+    "long0": -0.05235987755982989,
+    "lat0": 0,
+    "srsCode": "WGS 84 / UTM zone 30N"
+  }  
 }]
diff --git a/wkt.build.js b/wkt.build.js
index 4e8e632..6fc4229 100644
--- a/wkt.build.js
+++ b/wkt.build.js
@@ -8,7 +8,7 @@ var AFTERQUOTE = 5;
 var ENDED = -1;
 var whitespace = /\s/;
 var latin = /[A-Za-z]/;
-var keyword = /[A-Za-z84]/;
+var keyword = /[_A-Za-z84]/;
 var endThings = /[,\]]/;
 var digets = /[\d\.E\-\+]/;
 // const ignoredChar = /[\s_\-\/\(\)]/g;
@@ -430,6 +430,11 @@ function cleanWKT(wkt) {
 }
 var index = function(wkt) {
   var lisp = parseString(wkt);
+  // if compound SRS (e.g. COMPD_CS) parse only the PROJCS part (e.g. horizontal SRS)
+  if (lisp[0] == "COMPD_CS") {
+    console.warn('COMPD_CS not yet supported. Stripped Vertical datum leaving only PROJCS');
+    lisp = lisp[2];
+  }
   var type = lisp.shift();
   var name = lisp.shift();
   lisp.unshift(['name', name]);