# Draping and extruding GeoJSON polygons
**URL:** https://community.cesium.com/t/draping-and-extruding-geojson-polygons/5013
**Category:** CesiumJS
**Created:** [January 12, 2017, 9:55am UTC](https://community.cesium.com/t/draping-and-extruding-geojson-polygons/5013 "2017-01-12T09:55:35Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@hballal](https://community.cesium.com/u/hballal)
#### Post date: [January 12, 2017, 9:55am UTC](https://community.cesium.com/t/draping-and-extruding-geojson-polygons/5013/1 "2017-01-12T09:55:35Z")
Hello All,
I was wondering if the following is possible with the current version of Cesium. I have a GeoJSON polygons. I can use the GroundPrimitive to drape them to the terrain. I also know that I can turn the terrain layer off and use the height property to extrude the polygons.
However, is it possible to extrude the draped polygons as well? I dont think so but I am just checking with the group. The other option I am thinkig of implementing is sampling the terrain and then raising the extruded polygon to that height and extruding it but it will not drape the terrain. Would appreciate any help / input.
Hrishi
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### Author:  [@hannah](https://community.cesium.com/u/hannah)
#### Post date: [January 12, 2017, 3:45pm UTC](https://community.cesium.com/t/draping-and-extruding-geojson-polygons/5013/2 "2017-01-12T15:45:22Z")
Hello Hrishi,
It is not currently possible to extrude a polygon and also have it conform to terrain. It is something we would like to support eventually, but I think we need to do some research to figure out a new rendering method to achieve this.
Best,
Hannah