https://communities.bentley.com/products/digital-twin-cloud-services/itwin-services/f/itwin-services-forum/220040/itwin-ad-hoc-review---openroads-terrain-not-visibleHi, I have followed the steps described here: https://communities.bentley.com/products/road___site_design/w/road_and_site_design__wiki/50786/best-practices-for-creating-a-civil-imodel My terrain model is one with 400k triangles/points so I should noten-USTelligent Community 12https://communities.bentley.com/thread/674921?ContentTypeID=1Fri, 01 Oct 2021 14:47:40 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:eaf24fba-c2eb-422e-9202-d752346b7089Simon Normand<p>Hi Jeremie,<br />We are actively working on properly saving the Terrain elements in a such way that the Civil tools could easily identify and process them for the profile and cross-section views.<br /><br />For now, the workaround has been to assign a Feature-Definition name that starts with&nbsp; &nbsp; &nbsp; Terrain&nbsp; &nbsp; &nbsp; &nbsp; to your terrain elements.</p> <p>I hope this helps,</p> <p>Simon</p><div style="clear:both;"></div>