Brian Nickel recently sent through a link to the very Elk package for Dynamo, that essentially opens up web geographical data access to Dynamo and thus through to Revit fortopography creation and similar.
It was already an established plugin for Grasshopper, but developer Timothy Logan has released a port for Dynamo which can be accessed through the Package Manager.
Quote from The Revit Saver: Thank you to Timothy Logan for making Elk available to Dynamo users! Here are his two videos for how to use the OSM data andTopographical data.
