Watkins, Judge. Ed Sivak appeals from orders of the Superior Court of Dade County granting a motion to dismiss and motion for summary judgment filed by the Georgia Department of Natural Resources (“DNR”) in Sivak’s action to recover for injuries he sustained after falling at Cloudland Canyon State Park (“Cloudland” or “the Park”). On appeal, Sivak argues that the trial court erred in finding that DNR’s sovereign immunity had been preserved by the discretionary function exception in the Georgia Tort Claims Act (“GTCA”)[1] and that the Recreational Property Act (“RPA”)[2] barred Sivak’s claims. For the reasons set forth infra, we affirm the trial court’s ruling that Sivak’s claims were barred by sovereign immunity and thus subject to dismissal. Because the trial court lacked authority to decide the summary judgment motion, we vacate that order. “We review de novo a trial court’s ruling on a motion to dismiss based on sovereign immunity grounds, which is a matter of law. Factual findings are sustained if there is evidence supporting them, and the burden of proof is on the party seeking the waiver of immunity.”[3] So viewed, the evidence shows that Cloudland is an approximately 4,000-acre state park that was founded in the 1930s. The Park, which is situated on a large, flat plateau overlooking Cloudland Canyon, includes 60 miles of trails, 16 cottages, 10 yurts, and over 100 camping sites. One of the main attractions is the “Main Overlook,” a rocky, natural geological formation that allows visitors to look out over the part of the canyon where two creeks converge and combine. A portion of the Main Overlook is lined by wooden railings and concrete mounds that were installed in the 1930s by the Civilian Conservation Corps. However, there are “lots and lots of overlook that do not have any handrails at all[.]” Near the edge of the Main Overlook, there is a natural crevice that lies within the Corps handrails. There are no signs that warn visitors of the crevice, and there are no railings or other barricades surrounding it. Sivak, his wife, and their two children visited Cloudland over Labor Day weekend in 2018. After spending the night in the Park’s Yurt Village, the family hiked to the Main Overlook. While at the Main Overlook, Sivak began talking to another family about their dog. Because of the presence of the Corps railings, Sivak “felt like everything around [him] was stable and flat and that [he] was safe.” Thus, while Sivak was talking to the other family, he took “a step backwards[,] thinking that [he] was going to lean up against the fencepost.” Instead, he fell through the crevice and sustained serious injuries. Sivak sued DNR for negligence based on its failure to place “cones, barriers, signs or any kind of warnings . . . near the dangerous hole to warn or alert individuals that there was a hazardous condition.” After discovery, DNR moved to dismiss for lack of subject matter jurisdiction based on, inter alia, the discretionary function exception of the GTCA. DNR also sought summary judgment under the RPA. Following a hearing, the trial court entered simultaneous orders granting both motions. With respect to the motion to dismiss, the trial court concluded that the discretionary function exception applied because [DNR's] high-level decisions not to have a specific mandate but rather to allow discretion among Park employees regarding what course of conduct to take in order to inspect, maintain and/or modify the railing structures on the subject hiking trail, as well as the Park’s implementation of same, establishe[d] on its face, that all of [DNR's] decisions [regarding how/when to inspect, maintain, repair and/or modify hiking trails were] susceptible to a policy analysis. With regard to the summary judgment motion, the court found that the RPA barred Sivak’s claims[4] because neither of the two statutory exceptions in OCGA § 51-3-25 applied. This appeal followed. 1. Sivak argues that the trial court erred in finding that sovereign immunity bars his action because the discretionary function exception to the waiver of immunity for tort actions applies only to an exercise of discretion that amounts to a governmental policy decision, not to routine operational decisions. He also contends that the trial court did not find that DNR staff’s failure to address the safety hazard reflected any kind of policy judgment and thus “attempt[ed] to contort [DNR's] wholesale lack of any applicable policies into a policy judgment itself[.]“ [T]he applicability of sovereign immunity to claims brought against the State is a jurisdictional issue. Therefore, the applicability of sovereign immunity is a threshold determination, and, if it does apply, a court lacks jurisdiction over the case and, concomitantly, lacks authority to decide the merits of a claim that is barred. Any suit against the State barred by sovereign immunity is subject to dismissal pursuant to OCGA § 91112 (b) (1) for lack of subject matter jurisdiction.[5] As a general rule, the sovereign immunity of the State is waived by the GTCA[6] “for the torts of state officers and employees while acting within the scope of their official duties or employment[.]“[7] The GTCA, however, contains exceptions to this waiver immunity. As a department of the State, DNR is subject to the waiver and the exceptions set forth in the GTCA.[8] One such exception to liability is for “losses resulting from [t]he exercise or performance of or the failure to exercise or perform a discretionary function or duty on the part of a state officer or employee, whether or not the discretion involved is abused[.]“[9] A “discretionary function or duty” is statutorily defined as “a function or duty requiring a state officer or employee to exercise his or her policy judgment in choosing among alternate courses of action based upon a consideration of social, political, or economic factors.”[10] The Supreme Court of Georgia has cautioned that broadly extending the discretionary function exception to include any decision affected by “social, political, or economic factors” could allow the exception to “swallow the waiver.”[11] “Thus, for the exception to apply, the discretionary function or duty must be one that requires a state officer or employee to exercise his or her policy judgment in choosing among alternate courses of actions based upon the applicable factors.”[12] In Berkovitz v. United States, the United States Supreme Court adopted a two-step test to analyze whether governmental conduct is immune from suit under the discretionary function exception to the federal Tort Claims Act,[13] after which the GTCA was fashioned:[14] (1) whether conduct involves an “element of judgment or choice”[15]; and, if so, (2) “whether that judgment is of the kind the discretionary function exception was designed to shield.”[16] We have found no published Georgia case explicitly applying this two-step test. However, in Brantley v. Department of Human Resources,[17] our Supreme Court relied on caselaw that applied the test when the Court explained: [The] definition of discretionary function [in OCGA § 50-21-22 (2)] is almost identical to the definition of discretionary function that has been developed by the federal courts in construing the discretionary function exception to the Federal Tort Claims Act. In relevant part, the [United States] Supreme Court has stated that the purpose of the discretionary function exception under the Federal Tort Claims Act is to prevent judicial “secondguessing” of legislative and administrative decisions grounded in social, economic, and political policy through the medium of an action in tort, and that, for that reason, when properly construed, the exception protects only governmental actions and decisions based on considerations of public policy.[18] In determining whether the discretionary function immunity of the GTCA applies, we apply the test announced in Berkovitz, keeping in mind the statutory definition of “[d]iscretionary function or duty” found within OCGA § 50-21-22 (2). With regard to the first step of the test, Sivak argues that there is no evidence in the record that DNR made a policy judgment, as opposed to simply ignoring a potential hazard. He points to an e-mail thread in the record where park management asked the engineering chief (who at the time was a region supervisor) to present possible options for “safing up” the area around the crevice.[19] The supervisor proposed installing new steel handrails around the Main Overlook and the crevice. Ultimately, park management decided not to install the metal handrails. They testified that they had to weigh the benefits from adding safety measures, such as steel railings and warning signs, with DNR’s objectives of preserving the natural setting and maintaining the historical integrity of the original railing. Because there is no Georgia authority directly addressing this exception in the specific context of balancing safety with aesthetic and historical considerations in a state park, we turn to persuasive caselaw where federal courts have considered the issue under similar facts.[20] In Kiehn v. United States, the Tenth Circuit Court of Appeals held that “[t]he decision whether or not to post warning signs at Dinosaur National Monument [was] clearly discretionary as it involve[d] an element of judgment or choice.”[21] In Mahon v. United States, a wedding guest was injured after he fell from a second-story portico at an historic mansion overseen by the Boston Historical Park Service, a unit of the Interior Department’s National Park Service.[22] The First Circuit Court of Appeals noted that the plaintiff had “flag[ged] no discretionrestraining statute, regulation, or policy that compel[led] Boston Park to adopt a concessioner’s riskmanagement proposals, whether they be increasing the [portico] railing’s height, plunking down potted plants or stringing up rope to stop visitors from getting to the railing — or anything else, for that matter.”[23] Thus, the court concluded that the decision whether to implement the recommendations involved choice, which meant that the complained-of conduct was the product of decision.[24] Here, Sivak has not met his burden of proof[25] by pointing to any statute, regulation, or policy requiring DNR to warn visitors of potential danger or to add additional barriers around the crevice. Because the record reflects that DNR had a policy of preserving the Park’s natural beauty and historical accuracy, the trial court did not err in finding that its decisions regarding what course of conduct to take were subject to policy analysis[26] and thus were a policy judgment.[27] The fact that the policy considerations were not memorialized in the e-mail chain does not mean that DNR staff did not weigh them. Having found the first step established, we turn to the second step and hold that the challenged discretionary acts are the kind that the discretionary function exception were designed to shield.[28] This policy choice, driven as it was by historical and aesthetic considerations, was based on a consideration of social, political, and economic factors[29] and is “clearly [a] matter[ ] into which courts in general and judges in particular are ill equipped to intrude.”[30] Because the discretionary function exception leaves immunity in place where, as here, state employees are called upon to make policy judgment calls based on social, political, or economic factors, the trial court did not err in granting DNR’s motion to dismiss for lack of subject matter jurisdiction. 2. As noted above, at the same time the trial court granted DNR’s motion to dismiss, it entered a separate order, granting summary judgment on the ground that DNR owed no duty of care under the RPA. In light of our conclusion in Division 1 that the trial court lacked subject matter jurisdiction because DNR is immune from suit, the court should not have ruled on the merits of the summary judgment motion.[31] Accordingly, we vacate the summary judgment order. Judgment affirmed in part and vacated in part. Barnes, P. J., and Land, J., concur.