You can
* create and display any numbers of maps, placemarks
* multilingual interface
* configurate many settings (Zoom, Map Type...)
* markers can include site reference and image, and HTML code
* you can use contact and user information in placemarks
* you can use OpenTopoMap layer
* you can use plugin to call from K2 items
* you can add custom map types and use it
* you can create polygons (areas), circles and polylines
* you can create different layers
* you can use marker clusterer (markers grouping when map zoom out)
* import data from Zh GoogleMap and Zh YandexMap
* you can set labels for placemarks, with its styles
* you can use placemark table view or placemark details view
* third party content plugins work in some description fields
* you can display placemark information in popup on tabs
* you can specify KML Layer for map (field on map tab), just write URL for KML
* you can also display not only one KML Layer, but also GPX, GeoJSON and control its behavior
* you can manage KML Layers (show|hide it by its list menu)
* you can group placemarks and show|hide all group with addition control
* you can create overview map for K2 items, to show K2 items on map
* you can import your placemarks from CSV file
* you can visualize your data from the other databases
* you can create overview map for articles, to show articles on map
* you can use data for article overview map to show your map in an article, ie just define position in article fields and call plugin
* you can set rate for your placemarks
* you can show Elevation for KML and GPX files

Developed using Leaflet
Developed for Joomla 3/4/5

You should keep in mind - the extension archive is more than 2M: The File Size Upload Limit (uploadmaxfilesize) on your Web Server might be set to low to allow larger files to be uploaded. By default PHP allows files up to 2 MB.