Visualize Coordinates on Google Maps

I need assistance with visualizing some geographical coordinates on Google Maps. The data is available in a .KML file.

Key requirements:
- Place markers at each specified coordinate
- Create polygons that outline specific areas

Skills and experience:
- Proficient in Google Maps
- Familiar with .KML file format
- Previous experience with geographical data visualization

Real area location:
https://www.google.com/maps/@-2.9688356,-60.0946544,1294m/data=!3m1!1e3?entry=ttu