http://websoilsurvey.sc.egov.usda.gov/App/HomePage.htm
Even though the USDA does not have information about Papua New Guinea, they did have information about Hawaii. As a tropical volcanic island chain, Hawaii possesses high biodiversity, with numerous endemic species, particularly on land. This echoes the high biodiversity found in Papua New Guinea, particularly in its rainforests. . The Big Island’s Hamakua Coast has lush tropical rainforests, waterfalls, and valleys, with high rainfall. Papua New Guinea is also a volcanic region with 19 active, 34 potentially active, and 26 inactive volcanoes.
https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx?aoissa=HI801&viewextent=Hawaii
The website is easy to navigate, after you have identified your Area of Interest, the other tabs allow you to explore soil data. One of the neat things I found about Hawaii was the lava flow
Using the tab Soil Data Explorer, you can review an intro to the soils, suitabilities and limitations, properties and qualities, ecological sites, and soil reports
Here is Hamakua
