diff --git a/starsky/starsky.foundation.readmeta/ReadMetaHelpers/ReadMetaExif.cs b/starsky/starsky.foundation.readmeta/ReadMetaHelpers/ReadMetaExif.cs
index b6fd86690b..a03bee9d17 100644
--- a/starsky/starsky.foundation.readmeta/ReadMetaHelpers/ReadMetaExif.cs
+++ b/starsky/starsky.foundation.readmeta/ReadMetaHelpers/ReadMetaExif.cs
@@ -786,7 +786,7 @@ private static double GetGeoLocationAltitude(List<Directory> allExifItems)
             return (int) altitude;
         }
 
-        private static double GetXmpGeoAlt(List<Directory> allExifItems)
+        internal static double GetXmpGeoAlt(List<Directory> allExifItems)
         {
 	        var altitudeRef = true;
 	        var altitude = 0d;
diff --git a/starsky/starskytest/starsky.foundation.readmeta/ReadMetaHelpers/ReadMetaExifTest.cs b/starsky/starskytest/starsky.foundation.readmeta/ReadMetaHelpers/ReadMetaExifTest.cs
new file mode 100644
index 0000000000..9c9afccc8b
--- /dev/null
+++ b/starsky/starskytest/starsky.foundation.readmeta/ReadMetaHelpers/ReadMetaExifTest.cs
@@ -0,0 +1,75 @@
+using System.Collections.Generic;
+using MetadataExtractor;
+using MetadataExtractor.Formats.Xmp;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using starsky.foundation.readmeta.ReadMetaHelpers;
+using XmpCore.Impl;
+
+namespace starskytest.starsky.foundation.readmeta.ReadMetaHelpers;
+
+[TestClass]
+public class ReadMetaExifTest
+{
+    [TestMethod]
+    public void GetXmpGeoAlt_PositiveAltitude_ReturnsPositiveAltitude()
+    {
+        // Arrange
+        var dir2 = new XmpDirectory();
+        dir2.SetXmpMeta(new XmpMeta());
+        dir2.XmpMeta?.SetProperty("http://ns.adobe.com/exif/1.0/", "GPSAltitude","1/1" );
+        dir2.XmpMeta?.SetProperty("http://ns.adobe.com/exif/1.0/", "GPSAltitudeRef","0" );
+
+        var allExifItems = new List<Directory>
+        {
+	        dir2
+        };
+
+        // Act
+        var result = ReadMetaExif.GetXmpGeoAlt(allExifItems);
+
+        // Assert
+        Assert.AreEqual(1, result, 0.001); // Use an appropriate tolerance
+    }
+
+    [TestMethod]
+    public void GetXmpGeoAlt_NegativeAltitude_ReturnsNegativeAltitude()
+    {
+        // Arrange
+        var dir2 = new XmpDirectory();
+        dir2.SetXmpMeta(new XmpMeta());
+        dir2.XmpMeta?.SetProperty("http://ns.adobe.com/exif/1.0/", "GPSAltitude","10/1" );
+        dir2.XmpMeta?.SetProperty("http://ns.adobe.com/exif/1.0/", "GPSAltitudeRef","1" );
+
+        var allExifItems = new List<Directory>
+        {
+	        dir2
+        };
+
+        // Act
+        var result = ReadMetaExif.GetXmpGeoAlt(allExifItems);
+
+        // Assert
+        Assert.AreEqual(-10, result, 0.001); // Use an appropriate tolerance
+    }
+
+    [TestMethod]
+    public void GetXmpGeoAlt_ZeroAltitude_ReturnsZeroAltitude()
+    {
+        // Arrange
+        var dir2 = new XmpDirectory();
+        dir2.SetXmpMeta(new XmpMeta());
+        dir2.XmpMeta?.SetProperty("http://ns.adobe.com/exif/1.0/", "GPSAltitude","0/1" );
+        dir2.XmpMeta?.SetProperty("http://ns.adobe.com/exif/1.0/", "GPSAltitudeRef","1" );
+        var allExifItems = new List<Directory>
+        {
+	        dir2
+        };
+        
+        // Act
+        var result = ReadMetaExif.GetXmpGeoAlt(allExifItems);
+
+        // Assert
+        Assert.AreEqual(0, result, 0.001); // Use an appropriate tolerance
+    }
+
+}