Jürgen 0 Report post Posted January 9 Hi, For an excavation I used the LAK package and defined the bottom with a TIN ("bathymetry") at -7 m. Unfortunately it gets intersected with two layers despite of assigning the Lake from the conceptual model after the horizons. My final Lake bottom fits for half of the excavation and for the other half the surface looks like as it's truncated by the layers below. I've tried several concept models and grids but same result. Share this post Link to post Share on other sites