## 1. `dem` times two:

- Spatial Analyst > Map Algebra > Raster Calculator
- On the first input field of second row, type `"dem" + "dem"`

## 2. Neighborhood

Replaces all values with neighborhood's (defined by rectangle/circle/...) value (mean, min, ...)

- Spatial Analyst > Neighborhood > Block Statistics

## 3. Query

- Spatial Analyst > Map Algebra > Raster Calculator
- Use expression: `"dem" > 2500"`
- Cells that evaluate to true, produces `1`, else `0`

## 4. Distance

Euclidean Distance: Straight line distance. May not be much sensible within today's context.

- Spatial Analyst > Distance > Euclidean Distance