/usr/include/osgEarthFeatures/ is in libosgearth-dev 2.4.0+dfsg-6.
This file is owned by root:root, with mode 0o755.
..
/usr/include/osgEarthFeatures/AltitudeFilter
/usr/include/osgEarthFeatures/BufferFilter
/usr/include/osgEarthFeatures/BuildGeometryFilter
/usr/include/osgEarthFeatures/BuildTextFilter
/usr/include/osgEarthFeatures/BuildTextOperator
/usr/include/osgEarthFeatures/CentroidFilter
/usr/include/osgEarthFeatures/Common
/usr/include/osgEarthFeatures/ConvertTypeFilter
/usr/include/osgEarthFeatures/CropFilter
/usr/include/osgEarthFeatures/ExtrudeGeometryFilter
/usr/include/osgEarthFeatures/Feature
/usr/include/osgEarthFeatures/FeatureCursor
/usr/include/osgEarthFeatures/FeatureDisplayLayout
/usr/include/osgEarthFeatures/FeatureDrawSet
/usr/include/osgEarthFeatures/FeatureListSource
/usr/include/osgEarthFeatures/FeatureModelGraph
/usr/include/osgEarthFeatures/FeatureModelSource
/usr/include/osgEarthFeatures/FeatureSource
/usr/include/osgEarthFeatures/FeatureSourceIndexNode
/usr/include/osgEarthFeatures/FeatureTileSource
/usr/include/osgEarthFeatures/Filter
/usr/include/osgEarthFeatures/FilterContext
/usr/include/osgEarthFeatures/GeometryCompiler
/usr/include/osgEarthFeatures/GeometryUtils
/usr/include/osgEarthFeatures/LabelSource
/usr/include/osgEarthFeatures/MeshClamper
/usr/include/osgEarthFeatures/OgrUtils
/usr/include/osgEarthFeatures/OptimizerHints
/usr/include/osgEarthFeatures/PolygonizeLines
/usr/include/osgEarthFeatures/ResampleFilter
/usr/include/osgEarthFeatures/ScaleFilter
/usr/include/osgEarthFeatures/ScatterFilter
/usr/include/osgEarthFeatures/Script
/usr/include/osgEarthFeatures/ScriptEngine
/usr/include/osgEarthFeatures/Session
/usr/include/osgEarthFeatures/SubstituteModelFilter
/usr/include/osgEarthFeatures/TessellateOperator
/usr/include/osgEarthFeatures/TextSymbolizer
/usr/include/osgEarthFeatures/TransformFilter
/usr/include/osgEarthFeatures/VirtualFeatureSource