The Bubble in Boiling Springs, Boiling Springs, PA

## Overview The Bubble is a remarkable natural spring located in the heart of Boiling Springs, Pennsylvania — a charming village in Cumberland County named after the very spring that defines it. This large, artesian spring rises from underground limestone formations, creating visible "bubbling" action on the surface of the water that has captivated visitors for generations. The spring feeds directly into Children's Lake, a scenic 1.5-acre impoundment that serves as a centerpiece of the community. Boiling Springs sits along the Appalachian Trail corridor, and the village has long been a popular stop for thru-hikers and day visitors alike. The spring itself emerges from a series of underwater caves and fissures in the carbonate bedrock typical of the Cumberland Valley's karst geology. The constant upwelling of groundwater gives the spring its characteristic "boiling" appearance — though the water is actually quite cold, as is typical of limestone springs in this region. The Bubble is a popular site for certified scuba divers, who can explore the underwater caves and spring vents with proper diving gear. The spring area is open to the public 24 hours a day, 7 days a week, and there is no admission fee. Note that the water here is not designated as a drinking water source. ## Directions 1. From Carlisle, PA, head south on **Route 74 (South Hanover Street)**. 2. Drive approximately 5–6 miles and turn right (west) onto **Route 174** near the Rutter's #66 convenience store. 3. Head east on Route 174 into the village of Boiling Springs. 4. At the crossroad near **Café 101**, turn right. 5. The Bubble spring will be visible on your right shortly after making the turn, at **12 Front Street, Boiling Springs, PA 17007**. **GPS Coordinates:** 40.150545, -77.128912 ## What to Expect The Bubble is situated right in the center of Boiling Springs village, making it one of the more accessible natural springs in Pennsylvania. You'll find a large, clear pool of water where you can observe the dramatic upwelling from the underground spring vents. The "bubbling" effect is most visible on calm days and is a fascinating sight for visitors of all ages. Scuba diving is a popular activity here — divers can explore the underwater caves and spring openings that feed the pool. Proper certification and diving gear are required. The water visibility can be excellent, offering a unique freshwater diving experience. The surrounding area is full of things to see and do. **Children's Lake**, fed by the spring, is a scenic spot for walking, photography, and relaxing. The village itself has a welcoming small-town atmosphere with several eateries within easy walking distance, including cafés, a pizzeria, and a tavern. The **Appalachian Trail** passes directly through Boiling Springs, so you may encounter thru-hikers resupplying in town. This is a wonderful destination for a family outing or a leisurely afternoon. Plan to spend some extra time exploring the village, strolling around Children's Lake, and enjoying a meal at one of the local restaurants. The spring and its surroundings are accessible year-round, though the bubbling effect and water clarity may vary with seasonal conditions and recent rainfall.