The discussion centers around the visibility and impact of ash clouds from an Icelandic geyser in Europe. Participants report that the ash is currently around 20,000 feet high, making it largely invisible from the ground, with some noting clear skies in northern England and central Germany. There is curiosity about the ash's potential effects on weather and travel. Many express frustration over travel disruptions, questioning why people aren't utilizing Europe's extensive train system to circumvent flight cancellations. However, it is noted that trains are fully booked, and logistical challenges, such as high demand and strikes in France, complicate travel options. Some individuals have resorted to taxis or other means to reach their destinations, while others are stuck in airports or hotels due to the situation. The conversation highlights the difficulties faced by travelers, including the financial burden of accommodation and the complexities of navigating transportation during the ash cloud crisis.