Tourists admiring the stunning crystal blue ice cave of South Iceland

tourists admiring ice cave iceland blue cave touristic activity frost people exploring vatnajokull glacier nordic crystal blue guided tour unseen breathtaking adventurous trip vatnajokull sapphire blue unlike anything else icelandic landmark artic polar norway sightseeing carved ice formation water gallery man safety measures woman epic scenic nigardsbreen ecology ice melting climate beautiful sunlight vibrant whistler inside iceberg texture freeze frozen geology cold winter volcanic ash magma taking pictures