Hidden in plain sight the Áfonya utcai-barlang awaits. This unassuming cave entrance lies nestled within the garden of a house on Áfonya Street in Budapest’s second district. It’s a small opening. Yet it holds a surprisingly rich history.
The Áfonya utcai-barlang wasn’t always so easily accessible. In 1962 a landslip revealed its presence. Landslides are common in the area. This particular event exposed a hole. It was approximately 1.5 meters in diameter. The hole gave way to a passage. It was the beginning of the cave’s rediscovery.
Local resident and caver László Cserhalmi was instrumental in the cave’s exploration. He had noticed the ground collapse. He and the Vámosi Cave Research Group investigated. In 1963 they entered. They began the careful work of documenting and stabilizing the Áfonya utcai-barlang. The entrance was secured with a metal door. This protected the cave from further collapse.
The Áfonya utcai-barlang is formed in Buda’s Oligocene marl. It’s a small cave. The total length is approximately 28 meters. Only 19 meters are tall enough to walk upright in. The cave’s features are fascinating. Rounded formations are a result of water erosion. There are also collapsed surfaces and spheroids. The cave’s formation is related to the deep thermal waters. They dissolved the rock over time.
Even more intriguing are the smaller karstic formations. Tiny dripstone formations are evidence of slow water movement. Fungi were discovered. They thrive in the damp environment. One type found had a red stem and head. The cave’s temperature is remarkably consistent. It was recorded at 15°C to 17°C. This was even when outside temperatures reached -4°C.
The Áfonya utcai-barlang is part of the Buda Hills. It’s located in the Duna-Ipoly National Park. It’s significant because its geological formation is different from other nearby caves. The Áfonya utcai-barlang is unique. It’s formed in lower Oligocene Buda marl. The other caves in the area were formed in upper Eocene marl.
Access to the Áfonya utcai-barlang is strictly controlled. A maximum of four groups are allowed daily. Each group is limited to four people. This ensures the cave is not overwhelmed by visitors. It helps preserve the cave’s delicate ecosystem. So, marvel at this hidden gem. Remember its story. Remember its delicate ecosystem. Let’s move on to our next destination.