The Angel Passage is a narrow track on a ridge with steep drops to both side. A the narrowest point the path is no wider than 25cm and is creepily eroded to one side. The other side offers a steep slope which eventually ends in a furious river several hundred meters below. It is one of those tracks that should be off-limit to the public, but lucky this is Colombia so it is not. You can do the trek over "Paseo del Angel" and continue along the ridge until the track leads down to the river, which you can return along. A three hours round trip and a test of how bad your acrophobia is.