Hi - I need to draw a topographic map that displays the following features // 1- Contour interval of 20 meters // 2 - lowest point of elevation is

Hi - I need to draw a topographic map that displays the following features // 1- Contour interval of 20 meters // 2 - lowest point of elevation is 1440 meters // 3 - point of highest elevation is 1500 meters // 4 - there is one sinkhole or depression at any elevation // 5 - there is one steep slope and one gentle slope.