# Blender renders plane in distorted way when enabling displacement only vs. bump displacement [duplicate]

I'm trying to use a plane with an image texture to render a topographic map of the US. When I add a subdivision modifier and use a Bump Only surface displacement, I have a fine looking map:

When I try to use Displacement Only, however, I get this much less fun looking thing:

Is there a reason for this, and if so, what can I do to avoid it?

Here's my set of settings for reference:

• You may use a displacement node I think (hard to know as you don't show the node setting). See blender.stackexchange.com/questions/144897/… Aug 25 '19 at 16:10
• Jun 21 at 14:01

• I'm not seeing a strength property under the Displacement modifier. I've edited the main post to include the settings I'm seeing. Can you let me know where I should be looking? Aug 25 '19 at 22:12