By Russell Johnson Share Share Volcanic Caldera, Big Island of Hawaii Russell JohnsonDecember 12, 2015177 views0 Volcanic Caldera, Big Island of Hawaii Share Russell JohnsonRuss Johnson, a writer, photographer and filmmaker, is the creator and editor of The Connected Traveler, author of the book and audio book Tales of the Radio Traveler and host of the podcast "Gone Astray" on all major podcast platforms.
